Update alerts.html (#89609)

https://getsentry.atlassian.net/jira/software/projects/STAT/boards/175?selectedIssue=STAT-1350

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Author: elijames-codecov

src/sentry/templates/sentry/partial/alerts.html

@@ -95,7 +95,7 @@
   {% elif show_login_banner %}
   <div class="alert-banner default">
     <div class="alert-message">
-      Want to connect with the folks building Sentry? &nbsp<a target="_blank" href="https://discord.com/invite/sentry">Join us on Discord.</a>
+      Sentry & Codecov live demos. Bi-weekly Thursdays, 10 AM PT. &nbsp<a target="_blank" href="https://sentry.io/resources/find-fix-test/">RSVP & ask anything.</a>
     </div>
   </div>
 {% endif %}