fix: 🐛 correct handle yaml example-format for default values

[anisite]

Render defaults as yaml when using --example-format yaml

✅ Closes: #246

[codecov[bot]]

Codecov Report

Merging #493 (2033e52) into main (053351d) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #493   +/-   ##
=======================================
  Coverage   99.75%   99.75%           
=======================================
  Files          11       11           
  Lines        2039     2046    +7     
=======================================
+ Hits         2034     2041    +7     
  Misses          5        5           

Impacted Files	Coverage Δ
lib/markdownBuilder.js	99.55% <100.00%> (+<0.01%)	:arrow_up:

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