Issue #22558: Add remaining doc links to source code for Python-coded modules.
Reformat header above separator line (added if missing) to a common format.
Patch by Yoni Lavi.
diff --git a/Doc/library/shlex.rst b/Doc/library/shlex.rst
index bf54318..e81f982 100644
--- a/Doc/library/shlex.rst
+++ b/Doc/library/shlex.rst
@@ -3,6 +3,7 @@
 
 .. module:: shlex
    :synopsis: Simple lexical analysis for Unix shell-like languages.
+
 .. moduleauthor:: Eric S. Raymond <esr@snark.thyrsus.com>
 .. moduleauthor:: Gustavo Niemeyer <niemeyer@conectiva.com>
 .. sectionauthor:: Eric S. Raymond <esr@snark.thyrsus.com>