Convert \\subsection sections into rst format

sphinx_doc_src/cmds/cd.rst

@@ -7,7 +7,8 @@ Synopsis
 cd [DIRECTORY]
 
 
-\subsection cd-description Description
+Description
+------------
 `cd` changes the current working directory.
 
 If `DIRECTORY` is supplied, it will become the new directory. If no parameter is given, the contents of the `HOME` environment variable will be used.
@@ -20,7 +21,8 @@ Fish also ships a wrapper function around the builtin `cd` that understands `cd
 
 As a special case, `cd .` is equivalent to `cd $PWD`, which is useful in cases where a mountpoint has been recycled or a directory has been removed and recreated.
 
-\subsection cd-example Examples
+Examples
+------------
 
 \fish
 cd
@@ -30,6 +32,7 @@ cd /usr/src/fish-shell
 # changes the working directory to /usr/src/fish-shell
 \endfish
 
-\subsection cd-see-also See Also
+See Also
+------------
 
 See also the <a href="commands.html#cdh">`cdh`</a> command for changing to a recently visited directory.