Fix indent inheritance issue

[cptrodolfox]

Partial solution to the bug described by #72.

Example output:

stache/example on  fix-indent-inheritance-issue [!] via λ 9.6.7 
❯ cabal run example
Subnets:
  - pen
  "Test string"
  - candle
  "Test string"
  - egg
  "Test string"
  %   

TODO:

[] Remove unnecessary newline character