Nonfunctional changes

[gammazero]

Code style, trivial improvements, comment and doc typos.

[codecov]

Codecov Report

❌ Patch coverage is 52.94118% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.51%. Comparing base (6c1afb8) to head (eda090d).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
autoconf/expansion.go	0.00%	12 Missing ⚠️
autoconf/fetch.go	0.00%	1 Missing and 1 partial ⚠️
path/resolver/resolver.go	50.00%	1 Missing ⚠️
peering/peering.go	80.00%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main    #1017      +/-   ##
==========================================
- Coverage   60.53%   60.51%   -0.02%     
==========================================
  Files         267      267              
  Lines       33276    33269       -7     
==========================================
- Hits        20142    20132      -10     
- Misses      11469    11473       +4     
+ Partials     1665     1664       -1     

Files with missing lines	Coverage Δ
autoconf/client.go	58.70% <100.00%> (-0.27%)	⬇️
bitswap/network/httpnet/msg_sender.go	61.99% <100.00%> (-0.10%)	⬇️
ipld/unixfs/hamt/hamt.go	76.54% <100.00%> (-0.08%)	⬇️
ipld/unixfs/mod/dagmodifier.go	59.20% <100.00%> (ø)
path/resolver/resolver.go	71.22% <50.00%> (+0.20%)	⬆️
peering/peering.go	75.93% <80.00%> (+0.53%)	⬆️
autoconf/fetch.go	54.56% <0.00%> (ø)
autoconf/expansion.go	0.00% <0.00%> (ø)

... and 6 files with indirect coverage changes

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