fix link

content/blog/2019-10-10-facebook-birthday.md

@@ -16,7 +16,7 @@ script scraping it myself.
 
 A quick search on github later, I found that someone had already beat me to it.
 
-You can find the repository on [github](github.com/mobeigi/fb2cal) and follow the documentation, but I 
+You can find the repository on [github](https://github.com/mobeigi/fb2cal) and follow the documentation, but I 
 have documented the steps I followed below:
 
 The first step is to fetch the repository from github and editing the config.