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[lepdou]

What's the purpose of this PR

add language.png icon

Which issue(s) this PR fixes:

Brief changelog

Follow this checklist to help us incorporate your contribution quickly and easily:

• Read the Contributing Guide before making this pull request.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit tests to verify the code.
• Run mvn clean test to make sure this pull request doesn't break anything.
• Update the CHANGES log.

[codecov-commenter]

Codecov Report

Merging #4074 (897978a) into master (02a4df5) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4074      +/-   ##
============================================
- Coverage     51.69%   51.67%   -0.02%     
+ Complexity     2548     2547       -1     
============================================
  Files           484      484              
  Lines         14844    14844              
  Branches       1536     1536              
============================================
- Hits           7673     7671       -2     
- Misses         6637     6638       +1     
- Partials        534      535       +1     

Impacted Files	Coverage Δ
...rk/apollo/spring/property/SpringValueRegistry.java	83.78% <0.00%> (-5.41%)	⬇️
.../framework/apollo/spring/property/SpringValue.java	87.71% <0.00%> (-1.76%)	⬇️
.../apollo/internals/RemoteConfigLongPollService.java	78.31% <0.00%> (+0.60%)	⬆️

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