Update some of the top comments and shorten title of the first

section.

Doc/lib/libundoc.tex

@@ -3,11 +3,14 @@
 
 Here's a quick listing of modules that are currently undocumented, but
 that should be documented.  Feel free to contribute documentation for
-them!  (The idea and most contents for this chapter were taken from a
-posting by Fredrik Lundh; I have revised some modules' status.)
+them!  (The idea and original contents for this chapter were taken
+from a posting by Fredrik Lundh; I have revised some modules' status.)
 
 
-\section{Frameworks; somewhat harder to document, but well worth the effort}
+\section{Frameworks}
+
+Frameworks tend to be harder to document, but are well worth the
+effort spent.
 
 \begin{description}
 \item[Tkinter.py]