update scaffolding responsive section to reflect proper media query ranges

docs/scaffolding.html

@@ -338,13 +338,13 @@
           </tr>
           <tr>
             <td>Landscape tablets</td>
-            <td>768px to 940px</td>
+            <td>768px to 980px</td>
             <td>44px</td>
             <td>20px</td>
           </tr>
           <tr>
             <td>Default</td>
-            <td>940px and up</td>
+            <td>980px and up</td>
             <td>60px</td>
             <td>20px</td>
           </tr>
@@ -390,7 +390,7 @@
   @media (max-width: 768px) { ... }
 
   // Portrait tablet to landscape and desktop
-  @media (min-width: 768px) and (max-width: 940px) { ... }
+  @media (min-width: 768px) and (max-width: 980px) { ... }
 
   // Large desktop
   @media (min-width: 1200px) { .. }