Fixed hard path to icon.css

[mak001]

• now is vendor/module: path

[codecov]

Codecov Report

Merging #77 into master will not change coverage.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             master      #77   +/-   ##
=========================================
  Coverage     96.92%   96.92%           
  Complexity       63       63           
=========================================
  Files            24       24           
  Lines           293      293           
=========================================
  Hits            284      284           
  Misses            9        9

Impacted Files	Coverage Δ	Complexity Δ
src/Extensions/LeftAndMainExtension.php	0% <0%> (ø)	1 <0> (ø)	⬇️

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