use consistent format to explain shortcuts

index.html

@@ -108,12 +108,12 @@
                 <h3>Shortcuts</h3>
                 Glowing Bear has a few shortcuts:
                 <ul>
-                  <li>ALT+n: Toggle nicklist</li>
+                  <li>ALT-n: Toggle nicklist</li>
-                  <li>ALT+l: Focus on input bar</li>
+                  <li>ALT-l: Focus on input bar</li>
                   <li>ALT-[0-9]: Focus on buffer</li>
                   <li>ALT-a: Focus on next buffer with activity</li>
                   <li>ALT-<: Switch to previous buffer</li>
-                  <li>ALT+G: Focus on buffer list filter</li>
+                  <li>ALT-g: Focus on buffer list filter</li>
                   <li>escape: disconnect</li>
                   <li>arrow keys: history navigation</li>
                 </ul>