Fix grammaro

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143633 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LanguageExtensions.html b/docs/LanguageExtensions.html
index 34e2056..1dc8a85 100644
--- a/docs/LanguageExtensions.html
+++ b/docs/LanguageExtensions.html
@@ -779,7 +779,7 @@
 <p>The related result type can also be inferred for some methods.
 To determine whether a method has an inferred related result type, the first
 word in the camel-case selector (e.g., "init" in "initWithObjects") is
-considered, and the method will a related result type if its return
+considered, and the method will have a related result type if its return
 type is compatible with the type of its class and if</p>
 
 <ul>