spelling: connection

(cherry picked from commit fe75196)

Author: jsoref

src/main/java/com/rabbitmq/client/impl/ChannelN.java

@@ -601,7 +601,7 @@ public AMQCommand transformReply(AMQCommand command) {
         boolean notify = false;
         try {
             // Synchronize the block below to avoid race conditions in case
-            // connnection wants to send Connection-CloseOK
+            // connection wants to send Connection-CloseOK
             synchronized (_channelMutex) {
                 startProcessShutdownSignal(signal, !initiatedByApplication, true);
                 quiescingRpc(reason, k);