rename MeanAveragePrecision

[Borda]

What does this PR do?

unify names in detection package, part of #729

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• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

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[codecov]

Codecov Report

Merging #754 (8818e55) into master (1d1b7d5) will increase coverage by 0%.
The diff coverage is 69%.

@@          Coverage Diff          @@
##           master   #754   +/-   ##
=====================================
  Coverage      74%    74%           
=====================================
  Files         170    171    +1     
  Lines        6858   6867    +9     
=====================================
+ Hits         5050   5058    +8     
- Misses       1808   1809    +1