Update docs for bool changes by Guido around April 6
diff --git a/Doc/lib/librfc822.tex b/Doc/lib/librfc822.tex
index 2fb7d3e..6451b3e 100644
--- a/Doc/lib/librfc822.tex
+++ b/Doc/lib/librfc822.tex
@@ -156,8 +156,8 @@
\end{methoddesc}
\begin{methoddesc}{iscomment}{line}
-Return true if the given line should be ignored entirely, just skipped.
-By default this is a stub that always returns false, but you can
+Return \code{True} if the given line should be ignored entirely, just skipped.
+By default this is a stub that always returns \code{False}, but you can
override it in a subclass.
\end{methoddesc}