doxygenize auth_metadata_processor.h comments
diff --git a/include/grpc++/security/auth_metadata_processor.h b/include/grpc++/security/auth_metadata_processor.h
index 3536923..18e8a47 100644
--- a/include/grpc++/security/auth_metadata_processor.h
+++ b/include/grpc++/security/auth_metadata_processor.h
@@ -49,7 +49,7 @@
virtual ~AuthMetadataProcessor() {}
- /// If this method returns true, the Process function will be scheduled in
+ /// If this method returns true, the \a Process function will be scheduled in
/// a different thread from the one processing the call.
virtual bool IsBlocking() const { return true; }