Use lower-case in @sc in the documentation

Eli pointed out that @sc only produces small caps for lower case
letters in its argument, so it's weird to write it using upper-case
letters.  This patch fixes the instances I found.

Approved-By: Eli Zaretskii <eliz@gnu.org>

gdb/doc/gdb.texinfo

@@ -30560,7 +30560,7 @@ occurs exactly once.
 @section @sc{gdb/mi} General Design
 @cindex GDB/MI General Design
 
-Interaction of a @sc{GDB/MI} frontend with @value{GDBN} involves three
+Interaction of a @sc{gdb/mi} frontend with @value{GDBN} involves three
 parts---commands sent to @value{GDBN}, responses to those commands
 and notifications.  Each command results in exactly one response,
 indicating either successful completion of the command, or an error.
@@ -34999,7 +34999,7 @@ objects.
 @end table
 
 In the future new values may be added to this list so the front should
-be prepared for this possibility.  @xref{GDB/MI Development and Front Ends, ,@sc{GDB/MI} Development and Front Ends}.
+be prepared for this possibility.  @xref{GDB/MI Development and Front Ends, ,@sc{gdb/mi} Development and Front Ends}.
 
 @item type_changed
 This is only present if the varobj is still valid.  If the type

gdb/doc/python.texi

@@ -209,7 +209,7 @@ optional arguments while skipping others.  Example:
 * Threads In Python::           Accessing inferior threads from Python.
 * Recordings In Python::        Accessing recordings from Python.
 * CLI Commands In Python::      Implementing new CLI commands in Python.
-* GDB/MI Commands In Python::   Implementing new @sc{GDB/MI} commands in Python.
+* GDB/MI Commands In Python::   Implementing new @sc{gdb/mi} commands in Python.
 * Parameters In Python::        Adding new @value{GDBN} parameters.
 * Functions In Python::         Writing new convenience functions.
 * Progspaces In Python::        Program spaces.
@@ -2280,7 +2280,7 @@ must contain the frames that are being elided wrapped in a suitable
 frame decorator.  If no frames are being elided this function may
 return an empty iterable, or @code{None}.  Elided frames are indented
 from normal frames in a @code{CLI} backtrace, or in the case of
-@sc{GDB/MI}, are placed in the @code{children} field of the eliding
+@sc{gdb/mi}, are placed in the @code{children} field of the eliding
 frame.
 
 It is the frame filter's task to also filter out the elided frames from
@@ -4437,13 +4437,13 @@ Python code is read into @value{GDBN}, you may need to import the
 @code{gdb} module explicitly.
 
 @node GDB/MI Commands In Python
-@subsubsection @sc{GDB/MI} Commands In Python
+@subsubsection @sc{gdb/mi} Commands In Python
 
 @cindex MI commands in python
 @cindex commands in python, GDB/MI
 @cindex python commands, GDB/MI
-It is possible to add @sc{GDB/MI} (@pxref{GDB/MI}) commands
-implemented in Python.  A @sc{GDB/MI} command is implemented using an
+It is possible to add @sc{gdb/mi} (@pxref{GDB/MI}) commands
+implemented in Python.  A @sc{gdb/mi} command is implemented using an
 instance of the @code{gdb.MICommand} class, most commonly using a
 subclass.
 
@@ -4453,10 +4453,10 @@ with @value{GDBN}.  This initializer is normally invoked from the
 subclass' own @code{__init__} method.
 
 @var{name} is the name of the command.  It must be a valid name of a
-@sc{GDB/MI} command, and in particular must start with a hyphen
-(@code{-}).  Reusing the name of a built-in @sc{GDB/MI} is not
+@sc{gdb/mi} command, and in particular must start with a hyphen
+(@code{-}).  Reusing the name of a built-in @sc{gdb/mi} is not
 allowed, and a @code{RuntimeError} will be raised.  Using the name
-of an @sc{GDB/MI} command previously defined in Python is allowed, the
+of an @sc{gdb/mi} command previously defined in Python is allowed, the
 previous command will be replaced with the new command.
 @end defun
 
@@ -4469,18 +4469,18 @@ and @code{--frame} arguments are handled by @value{GDBN} itself therefore
 they do not show up in @code{arguments}.
 
 If this method raises an exception, then it is turned into a
-@sc{GDB/MI} @code{^error} response.  Only @code{gdb.GdbError}
+@sc{gdb/mi} @code{^error} response.  Only @code{gdb.GdbError}
 exceptions (or its sub-classes) should be used for reporting errors to
 users, any other exception type is treated as a failure of the
 @code{invoke} method, and the exception will be printed to the error
 stream according to the @kbd{set python print-stack} setting
 (@pxref{set_python_print_stack,,@kbd{set python print-stack}}).
 
-If this method returns @code{None}, then the @sc{GDB/MI} command will
+If this method returns @code{None}, then the @sc{gdb/mi} command will
 return a @code{^done} response with no additional values.
 
 Otherwise, the return value must be a dictionary, which is converted
-to a @sc{GDB/MI} @var{result-record} (@pxref{GDB/MI Output Syntax}).
+to a @sc{gdb/mi} @var{result-record} (@pxref{GDB/MI Output Syntax}).
 The keys of this dictionary must be strings, and are used as
 @var{variable} names in the @var{result-record}, these strings must
 comply with the naming rules detailed below.  The values of this
@@ -4489,20 +4489,20 @@ dictionary are recursively handled as follows:
 @itemize
 @item
 If the value is Python sequence or iterator, it is converted to
-@sc{GDB/MI} @var{list} with elements converted recursively.
+@sc{gdb/mi} @var{list} with elements converted recursively.
 
 @item
 If the value is Python dictionary, it is converted to
-@sc{GDB/MI} @var{tuple}.  Keys in that dictionary must be strings,
+@sc{gdb/mi} @var{tuple}.  Keys in that dictionary must be strings,
 which comply with the @var{variable} naming rules detailed below.
 Values are converted recursively.
 
 @item
 Otherwise, value is first converted to a Python string using
-@code{str ()} and then converted to @sc{GDB/MI} @var{const}.
+@code{str ()} and then converted to @sc{gdb/mi} @var{const}.
 @end itemize
 
-The strings used for @var{variable} names in the @sc{GDB/MI} output
+The strings used for @var{variable} names in the @sc{gdb/mi} output
 must follow the following rules; the string must be at least one
 character long, the first character must be in the set
 @code{[a-zA-Z]}, while every subsequent character must be in the set
@@ -4512,7 +4512,7 @@ character long, the first character must be in the set
 An instance of @code{MICommand} has the following attributes:
 
 @defvar MICommand.name
-A string, the name of this @sc{GDB/MI} command, as was passed to the
+A string, the name of this @sc{gdb/mi} command, as was passed to the
 @code{__init__} method.  This attribute is read-only.
 @end defvar
 
@@ -4560,7 +4560,7 @@ MIEcho("-echo-string", "string")
 @end smallexample
 
 The last three lines instantiate the class three times, creating three
-new @sc{GDB/MI} commands @code{-echo-dict}, @code{-echo-list}, and
+new @sc{gdb/mi} commands @code{-echo-dict}, @code{-echo-list}, and
 @code{-echo-string}.  Each time a subclass of @code{gdb.MICommand} is
 instantiated, the new command is automatically registered with
 @value{GDBN}.