Update Yusuke Endoh json info

Added URL and GitHub.

author/Yusuke_Endoh.json

@@ -7,12 +7,12 @@
     "location_code" : "JP",
     "location_name" : "Japan",
     "email" : "mame@ruby-lang.org",
-    "url" : null,
+    "url" : "https://mametter.hatenablog.com",
     "alt_url" : null,
     "deprecated_twitter_handle" : null,
     "mastodon" : "@mame@ruby.social",
     "mastodon_url" : "https://ruby.social/@mame",
-    "github" : null,
+    "github" : "@mame",
     "affiliation" : null,
     "winning_entry_set" : [
 	{ "winner_id" : "2012_endoh1" },