fix: backtick is accepted to delimit quoted literals

[Seddryck]

close #241

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ae76573) 85.40% compared to head (fb661ef) 85.43%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #242      +/-   ##
==========================================
+ Coverage   85.40%   85.43%   +0.02%     
==========================================
  Files         138      138              
  Lines        2371     2375       +4     
  Branches      375      375              
==========================================
+ Hits         2025     2029       +4     
  Misses        238      238              
  Partials      108      108              

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