Fix/unify the spelling of Objective-C.

llvm-svn: 334614
diff --git a/lldb/source/Symbol/ClangASTContext.cpp b/lldb/source/Symbol/ClangASTContext.cpp
index 98886703..61f63b7 100644
--- a/lldb/source/Symbol/ClangASTContext.cpp
+++ b/lldb/source/Symbol/ClangASTContext.cpp
@@ -1649,7 +1649,7 @@
   return false;
 }
 
-#pragma mark Objective C Classes
+#pragma mark Objective-C Classes
 
 CompilerType ClangASTContext::CreateObjCClass(const char *name,
                                               DeclContext *decl_ctx,