improve data on author_handle.json files

Updated URLs, Email addresses, GitHub handles,
Mastodon handles, and locations of various IOCCC winning authors.

author/Walter_Bright.json

@@ -4,15 +4,15 @@
     "author_handle" : "Walter_Bright",
     "full_name" : "Walter Bright",
     "sort_word" : "bright",
-    "location_code" : null,
-    "location_name" : null,
+    "location_code" : "US",
+    "location_name" : "United States of America",
     "email" : "emperor@classicempire.com",
-    "url" : "http://www.walterbright.com/",
+    "url" : "https://www.walterbright.com",
     "alt_url" : null,
     "deprecated_twitter_handle" : null,
     "mastodon" : null,
     "mastodon_url" : null,
-    "github" : null,
+    "github" : "@WalterBright",
     "affiliation" : null,
     "winning_entry_set" : [
 	{ "winner_id" : "1986_bright" }