fix: indentation of multiline string

[PeterChe1990]

closes: #8

[codecov-commenter]

Codecov Report

Merging #10 (1cf9b81) into main (a109d7e) will decrease coverage by 1.92%.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##             main      #10      +/-   ##
==========================================
- Coverage   98.64%   96.73%   -1.92%     
==========================================
  Files           3        5       +2     
  Lines         148      153       +5     
  Branches       34       33       -1     
==========================================
+ Hits          146      148       +2     
- Misses          2        5       +3     

Files Changed	Coverage Δ
src/asort/api.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes