chore: fix typos [skip changelog]

[xiaolou86]

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[codecov]

Codecov Report

Merging #483 (94d66e0) into main (45c797e) will decrease coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #483      +/-   ##
==========================================
- Coverage   65.71%   65.65%   -0.07%     
==========================================
  Files         207      207              
  Lines       25131    25131              
==========================================
- Hits        16515    16499      -16     
- Misses       7150     7168      +18     
+ Partials     1466     1464       -2     

Files	Coverage Δ
bitswap/client/internal/getter/getter.go	81.81% <ø> (ø)
bitswap/metrics/metrics.go	100.00% <100.00%> (ø)

... and 10 files with indirect coverage changes