removed "both" as a verticalAlign feature

[GiladFeder]

fixes: #1514

Hey! Hope this is a good PR. Would love to contribute more.

[codecov-commenter]

Codecov Report

Merging #1562 (60096a9) into master (49054da) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1562      +/-   ##
==========================================
- Coverage   99.42%   99.42%   -0.01%     
==========================================
  Files         316      316              
  Lines        3639     3638       -1     
  Branches      395      395              
==========================================
- Hits         3618     3617       -1     
  Misses         20       20              
  Partials        1        1              

Impacted Files	Coverage Δ
src/file/vertical-align/vertical-align.ts	100.00% <ø> (ø)

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[dolanmiu]

Thanks for this!