needed to add 10th row in the layout section to account for mkwan's example (pull request #395)

Author: kay-kim

source/includes/table-sql-to-agg-examples.yaml

@@ -11,6 +11,7 @@ rows:
   - 7: [ content.sql7, content.mongo7, content.desc7 ]
   - 8: [ content.sql8, content.mongo8, content.desc8 ]
   - 9: [ content.sql9, content.mongo9, content.desc9 ]
+  - 10: [ content.sql10, content.mongo10, content.desc10 ]
 ---
 # table metadata, as meta.<key>
 section: meta