Fix abstract comments

[AlexHaxe]

No description provided.

[codecov]

Codecov Report

Merging #142 into master will increase coverage by 0.68%.
The diff coverage is 86%.

@@            Coverage Diff             @@
##           master     #142      +/-   ##
==========================================
+ Coverage   78.47%   79.16%   +0.68%     
==========================================
  Files          39       39              
  Lines        2509     2592      +83     
  Branches      122      126       +4     
==========================================
+ Hits         1969     2052      +83     
+ Misses        423      419       -4     
- Partials      117      121       +4

Impacted Files	Coverage Δ
src/tokentree/walk/WalkAbstract.hx	82.45% <100%> (-4.82%)	⬇️
src/tokentree/utils/TokenTreeCheckUtils.hx	65.41% <84.74%> (+3.72%)	⬆️
src/tokentree/walk/WalkStatement.hx	92.01% <87.17%> (-0.63%)	⬇️

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