update ngql template (#1763)

docs-2.0/nebula-explorer/db-management/ngql-template.md

@@ -40,4 +40,6 @@ At the top navigation bar, click ![Template](https://docs-cdn.nebula-graph.com.c
 
 ## Use template
 
-In addition to clicking ![console](https://docs-cdn.nebula-graph.com.cn/figures/nav-console2.png) on the template list page to automatically jump to the console and enter the template, templates can also be used on the graph exploration page. For details, see [Start querying](../graph-explorer/ex-ug-query-exploration.md).
+- (Recommended) Use templates on the graph exploration page. For details, see [Start querying](../graph-explorer/ex-ug-query-exploration.md).
+
+- Click ![console](https://docs-cdn.nebula-graph.com.cn/figures/nav-console2.png) on the template list page to automatically jump to the console and enter the template. You need to modify the parameterized text.

docs-2.0/nebula-explorer/graph-explorer/ex-ug-query-exploration.md

@@ -61,6 +61,8 @@ The following is an example of VIDs `Kings` and `Suns`, step number `2`, and inc
 
 You can select the created nGQL template, and set the parameter value.
 
+![query_template](https://docs-cdn.nebula-graph.com.cn/figures/query_template_221118_en.png)
+
 - When the returned result is vertices, they will be displayed on the canvas.
 - When the returned result is not vertices, they will be displayed in table format. For example, return player name, age, etc.