fix: minor spacing issues with mask function

Author: 00Fjongl

src/source-rewrites.mjs

@@ -27,7 +27,7 @@ const regExpEscape = /[-[\]{}()*+?.,\\^$#\s]/g,
   basicStrEscape = /["'`$\\]/g,
   charset = /&#173;|&#8203;|&shy;|<wbr>/gi,
   subtermsByCaps = /[A-Z]?[^A-Z]+|[A-Z]/g,
-  subtermsByVowels = /(?<=[AEIOUYaeiouy])/g,
+  subtermsByVowels = /(?<=[AEIOUYaeiouy])(?!$)/g,
   termsBySpaces = /\S+/g,
   containsMask = /&#\d+;|&#x[A-z\d]+;|&[A-z]+;/,
   getEndPoint = /((?<![^\/])github\/)?[^\/]+$/,