[ISSUE#7629] typo about mQ -> mq and getmQ -> getmq

[mark4z]

Which Issue(s) This PR Fixes

Fixes #7629

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: 139 lines in your changes are missing coverage. Please review.

Comparison is base (c2c29c2) 43.20% compared to head (c2ad253) 43.22%. Report is 1 commits behind head on develop.

Files	Patch %	Lines
...lient/impl/consumer/DefaultMQPushConsumerImpl.java	34.61%	33 Missing and 1 partial :warning:
...a/org/apache/rocketmq/client/impl/MQAdminImpl.java	10.00%	27 Missing :warning:
...mq/client/impl/producer/DefaultMQProducerImpl.java	57.50%	16 Missing and 1 partial :warning:
...lient/impl/consumer/DefaultMQPullConsumerImpl.java	31.81%	15 Missing :warning:
...e/rocketmq/client/impl/consumer/RebalanceImpl.java	46.15%	14 Missing :warning:
.../rocketmq/client/impl/consumer/PullAPIWrapper.java	46.15%	7 Missing :warning:
...rocketmq/client/impl/factory/MQClientInstance.java	72.22%	5 Missing :warning:
...apache/rocketmq/store/timer/TimerMessageStore.java	20.00%	4 Missing :warning:
...apache/rocketmq/broker/slave/SlaveSynchronize.java	0.00%	3 Missing :warning:
...client/consumer/store/RemoteBrokerOffsetStore.java	76.92%	3 Missing :warning:
... and 6 more

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #7630      +/-   ##
=============================================
+ Coverage      43.20%   43.22%   +0.02%     
- Complexity      9796     9807      +11     
=============================================
  Files           1164     1164              
  Lines          84420    84428       +8     
  Branches       10961    10963       +2     
=============================================
+ Hits           36474    36498      +24     
+ Misses         43420    43408      -12     
+ Partials        4526     4522       -4     

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[mark4z]

看起来CI不怎么稳定