Fix escaping of single quotes in rust value highlighting test
Fix escaping of single quotes in rust value highlighting test

casimir/kakoune,lenormf/kakoune,mawww/kakoune,danr/kakoune,alexherbo2/kakoune,lenormf/kakoune,alexherbo2/kakoune,danr/kakoune,danr/kakoune,mawww/kakoune,Somasis/kakoune,casimir/kakoune,danr/kakoune,lenormf/kakoune,Somasis/kakoune,Somasis/kakoune,mawww/kakoune,casimir/kakoune,casimir/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,jkonecny12/kakoune,mawww/kakoune,lenormf/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,jkonecny12/kakoune,Somasis/kakoune