Fix errors in documentation

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@268709 91177308-0d34-0410-b5e6-96231b3b80d8
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