Fixed typo in _layout.less

Author: kalpmehta

lib/web/css/docs/source/_layout.less

@@ -91,7 +91,7 @@ footer.footer {
 //            <th>@gutter-width</th>
 //            <td class="vars_value">0</td>
 //            <td class="vars_value">'' | false | value</td>
-//            <td>Distanse between columns</td>
+//            <td>Distance between columns</td>
 //        </tr>
 //        <tr>
 //            <th colspan="4" class="vars_section">Variables for layout columns</th>
@@ -361,7 +361,7 @@ footer.footer {
 
 //  # Layout width
 //
-//  The <code>.lib-layout-width()</code> mixin is used to set default page width of the element the mixin is applyed to. It can be used to set width for the whole page wrapper or for the page elements individualy like header, footer, and so on.
+//  The <code>.lib-layout-width()</code> mixin is used to set default page width of the element the mixin is applied to. It can be used to set width for the whole page wrapper or for the page elements individualy like header, footer, and so on.
 
 //  # Layout width variables
 //