improve data on author_handle.json files

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

author/Anthony_C_Howe.json

@@ -7,7 +7,7 @@
     "location_code" : "CA",
     "location_name" : "Canada",
     "email" : "achowe@snert.com",
-    "url" : "http://www.snert.com/",
+    "url" : "http://www.snert.com",
     "alt_url" : null,
     "deprecated_twitter_handle" : "@SirWumpus",
     "mastodon" : null,