Improve description for `<s:checkboxlist name>`

Current description does not mention the most important function of this attribute.
diff --git a/source/tag-developers/checkboxlist-tag.md b/source/tag-developers/checkboxlist-tag.md
index 484ff1e..349206e 100644
--- a/source/tag-developers/checkboxlist-tag.md
+++ b/source/tag-developers/checkboxlist-tag.md
@@ -412,7 +412,7 @@
 
 					<td align="left" valign="top">String</td>
 
-					<td align="left" valign="top">The name to set for element</td>
+					<td align="left" valign="top">Set element name. Set Struts Action field to populate with selected list keys.</td>
 
 				</tr>