Update dashboard.html

Author: GitTimeraider

app/templates/dashboard.html

@@ -29,8 +29,8 @@ <h3>Create New Forwarder</h3>
                         <select id="destination" name="destination" required>
                             <option value="">Loading email accounts...</option>
                         </select>
-                        <input type="email" id="customDestination" name="customDestination" 
-                               placeholder="Enter custom email address" 
+                        <input type="text" id="customDestination" name="customDestination" 
+                               placeholder=""Enter email address or special destination (e.g., :blackhole:)"" 
                                style="display: none; margin-top: 0.5rem;">
                     </div>