Add note about why custom function dropLast is used

Author: drupol

src/Hie/Yaml.hs

@@ -50,6 +50,7 @@ fmtComponent (p, c) =
     <> "component: "
     <> dQuote c
 
+-- Same as init but handle empty list without throwing errors.
 dropLast :: [a] -> [a]
 dropLast l = take (length l - 1) l