fix: update Discord members count from 50k+ to 20k+

Author: afonsojramos

src/pages/index.astro

@@ -174,7 +174,7 @@ const themes = [
           <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
             <path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z" />
           </svg>
-          <span class="stat-number">50k+</span>
+          <span class="stat-number">20k+</span>
           <span class="stat-label">Discord Members</span>
         </div>
         <div class="stat">