[doc] sourcebuild.texi: adjust link to libgo

[Gerald Pfeifer]

This reference lacked a trailing slash, which requires another
roundtrip between web browser and server and shows up as a
redirect when checking links.

Installed.

Gerald


2010-12-31  Gerald Pfeifer  <gerald@pfeifer.com>
 
	* doc/sourcebuild.texi (Top Level): Adjust link to libgo.

Index: doc/sourcebuild.texi
===================================================================
--- doc/sourcebuild.texi	(revision 168362)
+++ doc/sourcebuild.texi	(working copy)
@@ -83,7 +83,7 @@
 
 @item libgo
 The Go runtime library.  The bulk of this library is mirrored from the
-@uref{http://code.google.com/@/p/@/go, master Go repository}.
+@uref{http://code.google.com/@/p/@/go/, master Go repository}.
 
 @item libgomp
 The GNU OpenMP runtime library.