Fix errors in documentation

llvm-svn: 268709
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 7946c3f0e2a2cf90e4ff433a408aa35112c5d98d
diff --git a/docs/UsingLibcxx.rst b/docs/UsingLibcxx.rst
index 5747201..514ed14 100644
--- a/docs/UsingLibcxx.rst
+++ b/docs/UsingLibcxx.rst
@@ -54,7 +54,7 @@
 
 Libc++ provides implementations of experimental technical specifications
 in a separate library, ``libc++experimental.a``. Users of ``<experimental/...>``
-headers may requiring linking with ``-lc++experimental``.
+headers may be required to link ``-lc++experimental``.
 
 .. code-block:: bash