Fixed time. (#12942)

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

- [ ] Changes file added for user-visible changes in `changes/` or
`orbit/changes/`.
See [Changes
files](https://fleetdm.com/docs/contributing/committing-changes#changes-files)
for more information.
- [ ] Documented any API changes (docs/Using-Fleet/REST-API.md or
docs/Contributing/API-for-contributors.md)
- [ ] Documented any permissions changes
- [ ] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements)
- [ ] Added support on fleet's osquery simulator `cmd/osquery-perf` for
new osquery data ingestion features.
- [ ] Added/updated tests
- [ ] Manual QA for all new/changed functionality
  - For Orbit and Fleet Desktop changes:
- [ ] Manual QA must be performed in the three main OSs, macOS, Windows
and Linux.
- [ ] Auto-update manual QA, from released version of component to new
version (see [tools/tuf/test](../tools/tuf/test/README.md))..

website/views/pages/imagine/defcon-31.ejs

@@ -23,7 +23,7 @@
     </div>
     <div purpose="rsa-cta">
       <h3>Join us at Beer Park</h3>
-      <p class="mb-2"><strong>Aug 9, 2023 | 6 - 9pm PT</strong></p>
+      <p class="mb-2"><strong>Aug 9, 2023 | 7 - 9pm PT</strong></p>
       <a class="mx-auto" purpose="cta-button" href="https://docs.google.com/forms/d/e/1FAIpQLSe2dookASezAFNnW5oRTuEDTmq9RHzdc3avz0bNZ_TSkMkjkQ/viewform?vc=0&c=0&w=1&flr=0">RSVP here</a>
     </div>
     <hr>
@@ -44,6 +44,8 @@
 
     <p>Your job as our hero Jules, is to plunge into the depths of these machines under your stewardship and find the words that were hidden there by past oracles, those who would show us the way out of this miasma.</p>
 
+    <h3 class="text-center mb-4">What you'll learn:</h3>
+
     <div purpose="checklist" class="mx-auto">
       <p>Learn how to use Fleet</p>
       <p>Learn how to query machines using osquery</p>
@@ -56,6 +58,8 @@
     </div>
     <br>
 
+    <h3 class="text-center mb-4">See you in Vegas!</h3>
+    <br>
     
     <div style="display: inline-flex; padding-bottom: 40px">
       <a href="https://fleetdm.com"><img style="height: 20px; width: 20px; margin-right: 24px;" alt="Fleet logo" src="/images/logo-fleet-20x20@2x.png"></a>