Fix copy-paste error in manpage.  Should be -stdlib=library.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163914 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/tools/clang.pod b/docs/tools/clang.pod
index 425a91e..9628d47 100644
--- a/docs/tools/clang.pod
+++ b/docs/tools/clang.pod
@@ -132,7 +132,7 @@
 
 Specify the language standard to compile for.
 
-=item B<-stdlib>=I<language>
+=item B<-stdlib>=I<library>
 
 Specify the C++ standard library to use; supported options are libstdc++ and
 libc++.