docs: Canonicalize URLs.

llvm-svn: 129181
diff --git a/llvm/docs/CommandGuide/llvm-diff.pod b/llvm/docs/CommandGuide/llvm-diff.pod
index c8cfdb3..ffe0b48 100644
--- a/llvm/docs/CommandGuide/llvm-diff.pod
+++ b/llvm/docs/CommandGuide/llvm-diff.pod
@@ -48,6 +48,6 @@
 
 =head1 AUTHORS
 
-Maintained by the LLVM Team (L<http://llvm.org>).
+Maintained by the LLVM Team (L<http://llvm.org/>).
 
 =cut