Merge pull request #14953 from baldwinjim/dfw2025-fix-cfp-link

[DFW-2025] add cfp link to propose.md

Author: toshywoshy

content/events/2025-dallas/propose.md

@@ -27,9 +27,4 @@ Choosing talks is part art, part science; here are some factors we consider when
 
 <hr>
 
-<strong>How to submit a proposal:</strong> Send an email to [{{< email_organizers >}}] with the following information
-<ol>
-	<li>Type (presentation, panel discussion, ignite)</li>
-	<li>Proposal Title (can be changed later)</li>
-	<li>Description (several sentences explaining what attendees will learn)</li>
-</ol>
+<a href="https://www.papercall.io/dod-dfw-2025"><strong>Submit a proposal</strong></a>