update JSON string encodings in author directory

The following characters are no longer encoded
and are represented as themselves:

- & is no longer encoded
- / is no longer encoded
- < is no longer encoded
- > is no longer encoded
- [\x80-\xff] is no longer encoded

The author ID JSON files under `/author` have
been updated accordingly.

author/Bernd_Meyer.json

@@ -7,7 +7,7 @@
     "location_code" : "AU",
     "location_name" : "Australia",
     "email" : "bmeyer@cs.monash.edu.au",
-    "url" : "https:\/\/web.archive.org\/web\/20030212213342\/http:\/\/byron.csse.monash.edu.au\/realindex.html",
+    "url" : "https://web.archive.org/web/20030212213342/http://byron.csse.monash.edu.au/realindex.html",
     "alt_url" : null,
     "deprecated_twitter_handle" : null,
     "mastodon" : null,