Make the text of the link to llvmgxx.html more appropriate: `llvmg++'.

llvm-svn: 14535
diff --git a/llvm/docs/CommandGuide/llvmgcc.pod b/llvm/docs/CommandGuide/llvmgcc.pod
index 4cbf728..c4b553a 100644
--- a/llvm/docs/CommandGuide/llvmgcc.pod
+++ b/llvm/docs/CommandGuide/llvmgcc.pod
@@ -78,7 +78,7 @@
 
 =head1 SEE ALSO
 
-L<llvmgxx>, L<gccas>, L<gccld>
+L<llvmg++|llvmgxx>, L<gccas>, L<gccld>
 
 =head1 AUTHORS