Fix language.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185739 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LangRef.rst b/docs/LangRef.rst
index 1e65f0b..91f2289 100644
--- a/docs/LangRef.rst
+++ b/docs/LangRef.rst
@@ -890,8 +890,7 @@
     
     On an argument, this attribute indicates that the function does not
     dereference that pointer argument, even though it may read or write the
-    memory that the pointer points to through if accessed through other
-    pointers.
+    memory that the pointer points to if accessed through other pointers.
 ``readonly``
     On a function, this attribute indicates that the function does not write
     through any pointer arguments (including ``byval`` arguments) or otherwise