change email to example.com

[sdzhong]

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (1feb90a) to head (bfc65d3).

Files with missing lines	Patch %	Lines
...ain/java/com/example/vu/android/MyApplication.java	0.00%	1 Missing ⚠️
.../example/vu/android/empowerplant/MainFragment.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #197   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         16      16           
  Lines        885     864   -21     
  Branches      65      65           
=====================================
+ Misses       885     864   -21     

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