Rename clang_constructUSR_ObjCategory to clang_constructUSR_ObjCCategory.
(there was a missing 'C').

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98554 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang-c/Index.h b/include/clang-c/Index.h
index ff7dd10..15afe8f 100644
--- a/include/clang-c/Index.h
+++ b/include/clang-c/Index.h
@@ -1091,7 +1091,7 @@
  * \brief Construct a USR for a specified Objective-C category.
  */
 CINDEX_LINKAGE CXString
-  clang_constructUSR_ObjCategory(const char *class_name,
+  clang_constructUSR_ObjCCategory(const char *class_name,
                                  const char *category_name);
 
 /**