Fix links to llvmgcc and llvmgxx

llvm-svn: 14537
diff --git a/llvm/docs/CommandGuide/gccas.pod b/llvm/docs/CommandGuide/gccas.pod
index a7e3253..c5ee63b 100644
--- a/llvm/docs/CommandGuide/gccas.pod
+++ b/llvm/docs/CommandGuide/gccas.pod
@@ -12,7 +12,7 @@
 =head1 DESCRIPTION
 
 The B<gccas> utility takes an LLVM assembly file generated by the
-L<llvm-gcc|llvm-gcc> or L<llvm-g++|llvm-g++> front-ends and converts
+L<llvmgcc|llvmgcc> or L<llvmg++|llvmgxx> front-ends and converts
 it into an LLVM bytecode file.  It is primarily used by the GCC
 front end, and as such, attempts to mimic the interface provided
 by the default system assembler so that it can act as a "drop-in"