added trackballs to Stelladaptor support doc

docs/index.html

@@ -268,7 +268,7 @@
       joysticks or mouse</li>
     <li>Emulates the Sega Genesis Controller using your computer's keyboard,
       joysticks or mouse</li>
-    <li>Emulates CX22/CX80 style trakballs and Amiga/Atari Mouse using your
+    <li>Emulates CX22/CX80 style trackballs and Amiga/Atari Mouse using your
       computer's mouse</li>
     <li>Emulates <a href="http://en.wikipedia.org/wiki/CompuMate">Spectravideo CompuMate</a> system using your computer's keyboard,
       including mapping of CompuMate 'Backspace', 'Space' and 'Enter' functionality to
@@ -1745,12 +1745,12 @@
       <td> &#x2713;</td>
     </tr>
     <tr>
-      <th> Trakball/Mouse</th>
+      <th> Trackball/Mouse</th>
       <td> &#x2715;</td>
       <td> &#x2715;</td>
       <td> &#x2713;</td>
       <td> &#x2713; (axis ignored)</td>
-      <td> &#x2715;</td>
+      <td> &#x2713;</td>
     </tr>
     <tr>
       <th> CompuMate</th>
@@ -2103,7 +2103,7 @@
       <td><pre>-usemouse &lt;always|analog|never&gt;</pre></td>
       <td>Use mouse as a controller as specified by ROM properties in specific case.
       Always and never are self-explanatory, analog means only for analog-type devices
-      (paddles, trakball, etc.).</td>
+      (paddles, trackball, etc.).</td>
     </tr>
 
     <tr>
@@ -2995,8 +2995,9 @@
   <h2><b><a name="Adaptor">Stelladaptor/2600-daptor Support</a></b></h2>
   <blockquote>
 
-  <p>Stella supports real Atari 2600 joysticks, paddles and driving controllers
-  using the <a href="http://www.grandideastudio.com/portfolio/stelladaptor-2600">Stelladaptor</a> and
+  <p>Stella supports real Atari 2600 joysticks, paddles, driving controllers
+  and trackballs (CX22/CX80 'Trak-Ball', Atari and Amiga mouse) using the
+  <a href="http://www.grandideastudio.com/portfolio/stelladaptor-2600">Stelladaptor</a> and
   <a href="http://2600-daptor.com">2600-daptor</a> devices.</p>
 
   <p>Stella can use up to <b>two</b> adaptors; any extra ones are ignored.