cloudwatch: make dimension text in alias popover clearer

public/app/plugins/datasource/cloudwatch/partials/query.parameter.html

@@ -49,7 +49,7 @@
 				<li>{{stat}}</li>
 				<li>{{namespace}}</li>
 				<li>{{region}}</li>
-				<li>{{DIMENSION_NAME}}</li>
+				<li>{{YOUR_DIMENSION_NAME}}</li>
 			</ul>
 		</info-popover>
 	</div>