Fix typo in edns.go

[muesli]

"implementes" => "implements"

[codecov-commenter]

Codecov Report

Merging #1162 into master will decrease coverage by 1.44%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1162      +/-   ##
==========================================
- Coverage   55.89%   54.44%   -1.45%     
==========================================
  Files          41       41              
  Lines       10141     9141    -1000     
==========================================
- Hits         5668     4977     -691     
+ Misses       3468     3159     -309     
  Partials     1005     1005              

Impacted Files	Coverage Δ
edns.go	25.55% <ø> (-2.01%)	⬇️
update.go	58.97% <0.00%> (-12.96%)	⬇️
duplicate.go	28.57% <0.00%> (-8.93%)	⬇️
serve_mux.go	70.27% <0.00%> (-5.29%)	⬇️
listen_go111.go	73.33% <0.00%> (-4.45%)	⬇️
msg_helpers.go	64.00% <0.00%> (-4.21%)	⬇️
zmsg.go	36.15% <0.00%> (-3.88%)	⬇️
acceptfunc.go	42.85% <0.00%> (-3.81%)	⬇️
xfr.go	29.45% <0.00%> (-3.17%)	⬇️
msg.go	73.80% <0.00%> (-2.73%)	⬇️
... and 32 more

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[miekg]

I've been here before. I'm not going to merge single typo PRs. Only a large one that fixes a whole bunch of typos.

sorry

[muesli]

It's the only typo I've found 😆