not Valid Rss

I checked my RSS feed with https://feedvalidator.org and realized that it wasn’t valid because of the field in the wp-rss2.php.
Basically it is supposed to be an email only instead of ” author (mailto: email)”
I edited the php to do that but because the email is parsed wierd or something, it comes out as not an email in the feed readers.
To solve it I basically hard-coded my email addy in the tags in wp-rss2.php and now it validates.
see:
https://feedvalidator.org/check.cgi?url=https://www.rynoweb.com/blog/wp-rss2.php
Just wondering if anybody and/or WP guys have figured out a better fix for this and why does WP screw up the email address in the feed?
Thnx
rYno