refactor!: avoid to use Caddy duration as pointer.

[vuongxuongminh]

No description provided.

[codecov-commenter]

Codecov Report

Merging #26 (e3a2750) into main (e018fd2) will increase coverage by 0.24%.
The diff coverage is 77.77%.

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
+ Coverage   75.06%   75.31%   +0.24%     
==========================================
  Files          24       24              
  Lines        1909     1908       -1     
==========================================
+ Hits         1433     1437       +4     
+ Misses        362      358       -4     
+ Partials      114      113       -1     

Impacted Files	Coverage Δ
caddyfile.go	42.65% <0.00%> (+0.58%)	⬆️
handler.go	76.13% <100.00%> (-0.27%)	⬇️
schema_fetcher.go	85.65% <100.00%> (+1.44%)	⬆️

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