Minor changes to match the style guide.
diff --git a/Doc/lib/libintro.tex b/Doc/lib/libintro.tex
index c17484f..62434cd 100644
--- a/Doc/lib/libintro.tex
+++ b/Doc/lib/libintro.tex
@@ -24,7 +24,7 @@
trace; some provide interfaces that are specific to particular
operating systems, such as access to specific hardware; others provide
interfaces that are
-specific to a particular application domain, like the World-Wide Web.
+specific to a particular application domain, like the World Wide Web.
Some modules are available in all versions and ports of Python; others
are only available when the underlying system supports or requires
them; yet others are available only when a particular configuration