feat: indent keyboard shortcuts

This indents the keyboard shortcuts related to the S key because you can only
use these keyboard shortcuts after you pressed S (when the search field is focused).
This is a visual hint.

Author: r00ster91

lib/docs/index.html

@@ -722,11 +722,13 @@ <h2>Tests</h2>
         <div class="modal">
           <h1>Keyboard Shortcuts</h1>
           <dl><dt><kbd>?</kbd></dt><dd>Show this help modal</dd></dl>
-          <dl><dt><kbd>Esc</kbd></dt><dd>Clear focus; close this modal</dd></dl>
           <dl><dt><kbd>s</kbd></dt><dd>Focus the search field</dd></dl>
-          <dl><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd></dl>
-          <dl><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd></dl>
-          <dl><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd></dl>
+          <div style="margin-left: 1em">
+            <dl><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd></dl>
+            <dl><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd></dl>
+            <dl><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd></dl>
+          </div>
+          <dl><dt><kbd>Esc</kbd></dt><dd>Clear focus; close this modal</dd></dl>
         </div>
       </div>
     </div>