fix: new image prefix starts at -1#172

FRSgit merged 1 commit intomainFRSOURCE/cypress-plugin-visual-regression-diff:mainfrom

fix/new-test-screenshot-starts-with--1-in-nameFRSOURCE/cypress-plugin-visual-regression-diff:fix/new-test-screenshot-starts-with--1-in-nameCopy head branch name to clipboard