mem-ruby: fix typo in GPU VIPER TCC comment

72ee6d1a fixed a deadlock in the GPU VIPER TCC.  However, it
inadvertently added a typo to the comments explaining the change.  This
commit fixes that.

Change-Id: Ibba835aa907be33fc3dd8e576ad2901d5f8f509c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/51687
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/mem/ruby/protocol/GPU_VIPER-TCC.sm

@@ -618,19 +618,19 @@ machine(MachineType:TCC, "TCC Cache")
   // they can cause a resource stall deadlock!
 
   transition(WI, {RdBlk, WrVicBlk, Atomic, WrVicBlkBack}) { //TagArrayRead} {
-      // put putting the stalled requests in a buffer, we reduce resource contention
+      // by putting the stalled requests in a buffer, we reduce resource contention
       // since they won't try again every cycle and will instead only try again once
       // woken up
       st_stallAndWaitRequest;
   }
   transition(A, {RdBlk, WrVicBlk, WrVicBlkBack}) { //TagArrayRead} {
-      // put putting the stalled requests in a buffer, we reduce resource contention
+      // by putting the stalled requests in a buffer, we reduce resource contention
       // since they won't try again every cycle and will instead only try again once
       // woken up
       st_stallAndWaitRequest;
   }
   transition(IV, {WrVicBlk, Atomic, WrVicBlkBack}) { //TagArrayRead} {
-      // put putting the stalled requests in a buffer, we reduce resource contention
+      // by putting the stalled requests in a buffer, we reduce resource contention
       // since they won't try again every cycle and will instead only try again once
       // woken up
       st_stallAndWaitRequest;
@@ -681,7 +681,7 @@ transition(I, Atomic, A) {TagArrayRead} {
 
   transition(A, Atomic) {
     p_profileMiss;
-    // put putting the stalled requests in a buffer, we reduce resource contention
+    // by putting the stalled requests in a buffer, we reduce resource contention
     // since they won't try again every cycle and will instead only try again once
     // woken up
     st_stallAndWaitRequest;