Organize the document content of the "Kerenl Basics" section.
This PR does not make substantial changes to the text content,
but only makes some optimizations and adjustments to the
document formatting, including:
- Enclose the function name and variable name in "`", so that
the HTML rendering will use different fonts to distinguish
them from the text part.
- Add blank lines between paragraphs, otherwise the HTML
rendering will merge the paragraphs without blank lines
into one paragraph.
- Use "@ref" to reference the page of the corresponding
chapter, such as the reference to page_thread_management
at the end of the "Thread Scheduling" chapter.
- For tables in markdown, try to align the columns in the
text to beautify the reading experience.
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
The original directory structure was too flat and
inconvenient to view.
The directory is now reorganized according to the
first-level chapters, and some sub-chapters are
moved to the second-level directory.
Note: documentation/env is not moved to
documentation/4.tool because there are too many
external places that reference this path,
especially in bsp, so this directory path remains
as it is.
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
