Fix typo

Signed-off-by: Craig Perkins <[email protected]>

server/src/main/java/org/opensearch/action/support/replication/TransportReplicationAction.java

@@ -244,7 +244,7 @@ protected TransportReplicationAction(
         if (threadPool != null) {
             this.tcWrapper = InternalThreadContextWrapper.from(threadPool.getThreadContext());
         } else {
-            this.tcWrapper = InternalThreadContextWrapper.from(transportSeervice.threadPool.getThreadContext());
+            this.tcWrapper = InternalThreadContextWrapper.from(transportService.getThreadPool().getThreadContext());
         }
         this.transportService = transportService;
         this.clusterService = clusterService;