code: function hasIdInTitle(id) {
              const docText = cat(docFilename);
              const idOldAtEndOfTitleRegExp = new RegExp(`^# (.*?) \\(${id}\\)`, "u"); // original format
              const idNewAtBeginningOfTitleRegExp = new RegExp(`^# ${id}: `, "u"); // new format is same as rules index
              /*
               * 1. Added support for new format.
               * 2. Will remove support for old format after all docs files have new format.
               * 3. Will remove this check when the main heading is automatically generated from rule metadata.
               */
  
              return idNewAtBeginningOfTitleRegExp.test(docText) || idOldAtEndOfTitleRegExp.test(docText);
          }
docs: Check if id is present in title
  @param {string} id id to check for
  @returns {boolean} true if present
  @private