fix example typo

[SenZhangAI]

Make sure set the target branch to develop

What is the purpose of the change

fix typo in an example

Brief changelog

1. fix typo in order message example.

Verifying this change

The example codes of the Order Message has a typo, the producer's topic can not match the consumer's topic.
I found that docs in the Develop branch have already fixed this typo

https://github.com/apache/rocketmq/blame/master/docs/en/Example_Orderly.md#L43

and this has not been fixed on the current official website, see http://rocketmq.apache.org/docs/order-example/

[coveralls]

Coverage decreased (-0.1%) to 51.813% when pulling e61af0e on SenZhangAI:develop into 98aca7f on apache:develop.

[codecov-io]

Codecov Report

Merging #2569 (e61af0e) into develop (98aca7f) will decrease coverage by 0.09%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #2569      +/-   ##
=============================================
- Coverage      46.28%   46.19%   -0.10%     
+ Complexity      4349     4343       -6     
=============================================
  Files            547      547              
  Lines          36247    36247              
  Branches        4808     4808              
=============================================
- Hits           16777    16744      -33     
- Misses         17391    17419      +28     
- Partials        2079     2084       +5     

Impacted Files	Coverage Δ	Complexity Δ
...rocketmq/broker/filtersrv/FilterServerManager.java	20.00% <0.00%> (-14.29%)	5.00% <0.00%> (-2.00%)
...org/apache/rocketmq/common/stats/StatsItemSet.java	44.77% <0.00%> (-7.47%)	17.00% <0.00%> (-3.00%)
...a/org/apache/rocketmq/logging/inner/SysLogger.java	28.57% <0.00%> (-5.72%)	5.00% <0.00%> (-2.00%)
...ketmq/client/impl/consumer/PullMessageService.java	75.55% <0.00%> (-4.45%)	9.00% <0.00%> (-1.00%)
...java/org/apache/rocketmq/logging/inner/Logger.java	51.67% <0.00%> (-4.31%)	28.00% <0.00%> (-1.00%)
...ketmq/common/protocol/body/ConsumerConnection.java	95.83% <0.00%> (-4.17%)	13.00% <0.00%> (-1.00%)
...mq/client/impl/consumer/RebalanceLitePullImpl.java	50.84% <0.00%> (-3.39%)	11.00% <0.00%> (ø%)
...ava/org/apache/rocketmq/test/util/VerifyUtils.java	46.26% <0.00%> (-2.99%)	14.00% <0.00%> (-1.00%)
...nt/impl/consumer/ConsumeMessageOrderlyService.java	42.59% <0.00%> (-2.89%)	16.00% <0.00%> (-3.00%)
...e/rocketmq/client/impl/consumer/RebalanceImpl.java	51.79% <0.00%> (-2.79%)	35.00% <0.00%> (ø%)
... and 17 more

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46.19%. Comparing base (98aca7f) to head (e61af0e).
⚠️ Report is 7432 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #2569      +/-   ##
=============================================
- Coverage      46.34%   46.19%   -0.15%     
+ Complexity      4356     4343      -13     
=============================================
  Files            547      547              
  Lines          36247    36247              
  Branches        4808     4808              
=============================================
- Hits           16797    16744      -53     
- Misses         17378    17419      +41     
- Partials        2072     2084      +12     

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