minor comment update (#46)

Author: hhakimi53

include/ProcedureCallback.hpp

@@ -48,7 +48,7 @@ class ProcedureCallback {
     virtual bool callback(InvocationResponse response) throw (voltdb::Exception) = 0;
     virtual void abandon(AbandonReason reason) {}
     // Mechanism for procedure to over-ride abandon property set in client in event of backpressure.
-    // @return true: honor the abandoning of requests in case of back pressure
+    // @return true: allow abandoning of requests in case of back pressure
     //         false: don't abandon the requests in back pressure scenario.
     virtual bool allowAbandon() const {return true;}
     virtual ~ProcedureCallback() {}