doc/shell: Correct build issues from fc9f8f5085

doc/shell/Makefile.am

@@ -34,7 +34,7 @@ file.texi: file.t
 	    -n "Memory Commands" < $< > $@
 
 memory.texi: memory.t
-	$(BMENU2) -p "File and Directory Commands df - display file system disk space usage" \
+	$(BMENU2) -p "File and Directory Commands unmount - unmount disk" \
 	    -u "Top" \
 	    -n "RTEMS Specific Commands" < $< > $@
 

doc/shell/network.t

@@ -24,6 +24,7 @@ This section details the Network Commands available.  A
 subsection is dedicated to each of the commands and
 describes the behavior and configuration of that
 command as well as providing an example usage.
+
 @c
 @c
 @c
@@ -592,6 +593,8 @@ considered as replied when calculating statistics.
 @item -z tos
 Use the specified type of service.
 
+@end table
+
 @subheading EXIT STATUS:
 The ping utility exits with one of the following values:
 

doc/shell/shell.texi

@@ -88,7 +88,7 @@
 @include rtems.texi
 @include network.texi
 
-@node Function and Variable Index, Concept Index, Network Commands route - show or manipulate the ip routing table, Top
+@node Function and Variable Index, Concept Index, Network Commands ping - ping a host or IP address, Top
 @unnumbered Function and Variable Index
 @printindex fn