Merge pull request amitmerchant1990#63 from lasyavanga/readme-sitemap-url-fix

Fixed sitemap URL by appending missing `.xml`

Author: amitmerchant1990

README.md

@@ -119,7 +119,7 @@ Reverie comes with a [RSS feed](https://en.wikipedia.org/wiki/RSS) in-built. The
 
 ## Sitemap
 
-The generated sitemap of your blog can be found at <https://yourgithubusername.github.io/sitemap>. You can see the example sitemap feed over [here](https://reverie-jekyll.netlify.app/sitemap).
+The generated sitemap of your blog can be found at <https://yourgithubusername.github.io/sitemap.xml>. You can see the example sitemap feed over [here](https://reverie-jekyll.netlify.app/sitemap.xml).
 
 ## Emailware
 Reverie is an [emailware](https://en.wiktionary.org/wiki/emailware). Meaning, if you liked using this theme or it has helped you in any way, I'd like you send me an email at <[email protected]> about anything you'd want to say about this software. I'd really appreciate it!