style: pre-commit.ci fixes

Author: pre-commit-ci[bot]

include/CLI/impl/StringTools_inl.hpp

@@ -185,10 +185,10 @@ find_member(std::string name, const std::vector<std::string> names, bool ignore_
     return (it != std::end(names)) ? (it - std::begin(names)) : (-1);
 }
 #if defined(CLI11_MODULE)
-CLI11_MODULE_INLINE const std::string& escapedChars("\b\t\n\f\r\"\\");
-CLI11_MODULE_INLINE const std::string& escapedCharsCode("btnfr\"\\");
-CLI11_MODULE_INLINE const std::string& matchBracketChars("\"'`])>}");
-CLI11_MODULE_INLINE const std::string& matchBracketChars("\"'`])>}");
+CLI11_MODULE_INLINE const std::string &escapedChars("\b\t\n\f\r\"\\");
+CLI11_MODULE_INLINE const std::string &escapedCharsCode("btnfr\"\\");
+CLI11_MODULE_INLINE const std::string &matchBracketChars("\"'`])>}");
+CLI11_MODULE_INLINE const std::string &matchBracketChars("\"'`])>}");
 #else
 static const std::string &escapedChars{"\b\t\n\f\r\"\\"};
 static const std::string &escapedCharsCode{"btnfr\"\\"};