add two columns for icelake and cascadelake

Author: bedroge

docs/available_software/overview.md

@@ -8,14 +8,14 @@ This table gives an overview of all the available software in EESSI per specific
         <tr>
             <th rowspan="3">Name</th>
             <th colspan="4">aarch64</th>
-            <th colspan="7">x86_64</th>
+            <th colspan="9">x86_64</th>
         </tr>
         <tr>
             <th colspan="3"></th>
             <th colspan="1">nvidia</th>
             <th colspan="1"></th>
             <th colspan="3">amd</th>
-            <th colspan="3">intel</th>
+            <th colspan="5">intel</th>
         </tr>
         <tr>
             <th colspan="1"></th>
@@ -29,6 +29,8 @@ This table gives an overview of all the available software in EESSI per specific
             <th colspan="1"></th>
             <th colspan="1"></th>
             <th colspan="1"></th>
+            <th colspan="1"></th>
+            <th colspan="1"></th>
         </tr>
     </thead>
 </table>