fix column rows

docs/modules/ROOT/pages/documentation.adoc

@@ -67,7 +67,7 @@ pass:[*] The SDK creates Ant-based projects that any Java IDE can import. We rec
 == Create
 
 After downloading and installing, xref:documentation.adoc[bookmark this page], and start writing your first game!
-[cols="3", options="header"]
+[cols="2", options="header"]
 |===
 
 a| Tutorials