grammar correction

[shockyng]

grammar correction of three words

[codecov]

Codecov Report

Merging #134 into master will increase coverage by 2.5%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master     #134     +/-   ##
=========================================
+ Coverage   86.88%   89.39%   +2.5%     
=========================================
  Files         117      141     +24     
  Lines        2006     3168   +1162     
  Branches      268      268             
=========================================
+ Hits         1743     2832   +1089     
- Misses        245      318     +73     
  Partials       18       18

Impacted Files	Coverage Δ
src/js/data-structures/binary-search-tree.js	20.28% <0%> (-31.44%)	⬇️
src/js/algorithms/sorting/shell-sort.js	92.85% <0%> (-7.15%)	⬇️
src/js/util.js	95% <0%> (-5%)	⬇️
src/js/algorithms/backtracking/rat-in-maze.js	88% <0%> (-4.31%)	⬇️
src/js/algorithms/backtracking/sudoku-solver.js	97.29% <0%> (-2.71%)	⬇️
src/js/algorithms/search/interpolation-search.js	80% <0%> (-1.82%)	⬇️
src/js/data-structures/heap.js	88.46% <0%> (-0.43%)	⬇️
src/js/algorithms/sorting/bucket-sort.js	100% <0%> (ø)	⬆️
...s/algorithms/dynamic-programing/min-coin-change.js	100% <0%> (ø)	⬆️
src/js/others/base-converter.js	100% <0%> (ø)	⬆️
... and 56 more

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