add info on adding a table caption

Author: tbrowder

doc/Language/tables.pod6

@@ -110,6 +110,16 @@ expect a warning about short rows being filled with empty cells.
 row with the most cells. Short rows are padded on the right with
 empty cells and generate a warning.)
 
+8. Adding a caption to a table is possible using the C<=begin table>
+line as in this example:
+
+=begin code :skip-test
+=begin table :caption<My Tasks>
+mow lawn
+take out trash
+=end table
+=end code
+
 Note that not following best practices may require more table
 processing due to additional looping over table rows.