fix: use "its" rather than "it's" when appropriate

Use "its" for the possessive, rather than "it's" (contraction of for "it is").

scripts/path-map.js

@@ -53,7 +53,7 @@ const getGuideRoutes = () => {
 };
 
 /**
- * Generates routes for each of the roadmap and it's respective versions
+ * Generates routes for each of the roadmap and its respective versions
  * @returns {*}
  */
 const getRoadmapRoutes = () => {