[libc] [obvious] Fix typo in binary header.

GitOrigin-RevId: 33abb7292e8f8f373f319a96a9456e05a1efce2d
diff --git a/utils/LibcTableGenUtil/APIIndexer.cpp b/utils/LibcTableGenUtil/APIIndexer.cpp
index 366dea9..6ef9a65 100644
--- a/utils/LibcTableGenUtil/APIIndexer.cpp
+++ b/utils/LibcTableGenUtil/APIIndexer.cpp
@@ -1,4 +1,4 @@
-//===-- Implementation of APIIndexer clas ---------------------------------===//
+//===-- Implementation of APIIndexer class --------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.