docs: update link (#363)

Author: MOHAMMED HANAN M T P

README.md

@@ -7,7 +7,7 @@
 
 HTTP request logger middleware for node.js
 
-> Named after [Dexter](http://en.wikipedia.org/wiki/Dexter_Morgan), a show you should not watch until completion.
+> Named after [Dexter](https://en.wikipedia.org/wiki/Dexter_Morgan), a show you should not watch until completion.
 
 ## Installation