Fix typo in package.json homepage field

The `homepage` url started with `httsp` instead of `https`, but this fixes that.

Author: oksas

package.json

@@ -24,7 +24,7 @@
     "eventemitter",
     "pubsub"
   ],
-  "homepage": "httsp://github.com/developit/mitt",
+  "homepage": "https://github.com/developit/mitt",
   "authors": [
     "Jason Miller <jason@developit.ca>"
   ],