Remove outdated CFP call-to-action from conference event listing and add registration information (#404)

* Updated 1 file via CloudCannon.

* Updated 1 file via CloudCannon.

---------

Co-authored-by: Gracie Gregory <[email protected]>

Author: cloudcannon[bot]

events/rustconf.md

@@ -1,15 +1,16 @@
 ---
 title: RustConf 2023
 description: >-
-  The largest annual gathering of the Rust-language communityConversation Q&A
-  sessions. In person in Albuquerque, NM and online. The Rust Foundation is a
-  proud sponsor of RustConf.  September 11-15, 2023
+  RustConf 2023 is taking place in-person in Albuquerque, NM, and online from
+  September 11-15, 2023.
 date: 2023-09-12T00:00:00Z
 tags:
   - video
   - live
 layout: layouts/event.njk
 ---
-## Interested in giving a talk at RustConf? Submit a proposal by April 2 at 11:59 PM MDT <a target="_blank" rel="noopener" href="https://sessionize.com/rustconf-2023">here</a>.
+## Learn more about RustConf 2023, view the program, and register here: &nbsp;<a target="_blank" href="https://rustconf.com">https://rustconf.com</a>.&nbsp;
 
-## Registration for RustConf is not yet open. Please check&nbsp;<a target="_blank" rel="noopener" href="https://rustconf.com">https://rustconf.com</a> for updates.&nbsp;
+
+
+*The Rust Foundation is a sponsor of RustConf 2023: the largest annual gathering of the Rust language community. As a sponsor, we value the opportunity to contribute financial support to the event and appreciate the efforts of RustConf's organizing team to build this year's lineup of content and experiences.&nbsp;*