fix: correct constraint usage in parser and lexer definitions#65

SundermannC merged 1 commit intoissue-64Universal-Variability-Language/uvl-parser:issue-64from

64-regular-expressions-in-the-new-version-of-the-grammar-are-wrongUniversal-Variability-Language/uvl-parser:64-regular-expressions-in-the-new-version-of-the-grammar-are-wrongCopy head branch name to clipboard