more details in footnote

Author: ManHatos

docs/reference.mdx

@@ -283,7 +283,7 @@ Using the markdown for either users, roles, or channels will usually mention the
 
 \*\*\* Timestamps are expressed in seconds and display the given timestamp in the user's timezone and locale.
 
-\*\*\*\* Email and phone number markdown will open the `mailto:` and `tel:` URL protocols respectively.
+\*\*\*\* Email and phone number markdown will open the `mailto:` and `tel:` URL protocols respectively. Markdown can optionally be prefixed by a protocol (e.g. `<mailto:[email protected]>`). Email markdown supports headers, values must be [URL Encoded](https://en.wikipedia.org/wiki/Percent-encoding) (e.g. `<[email protected]?subject=Message%20Title&body=Message%20Content>`).
 
 ###### Timestamp Styles