docs: fyxed typos and updated docs

src/utils/isUrl.ts

@@ -1,3 +1,7 @@
+/**
+ * Checks if string is in URL format.
+ * @param url - string to check.
+ */
 export const isUrl = (url: string): boolean => {
   const pattern = new RegExp(
     '^(http://|https://)[a-z0-9]+([-.]{1}[a-z0-9]+)*.[a-z]{2,5}(:[0-9]{1,5})?(/.*)?$',