Update 1.explain-and-profile.md

docs-2.0/3.ngql-guide/17.query-tuning-statements/1.explain-and-profile.md

@@ -111,6 +111,6 @@ Execution Plan
 ---------------------------------------------------------------------------------------------------------------------------------------------  -------------
 ```
 
-If you want to convert the `dot` language of the above example into a Graphviz graph, see the following figure.
+The Graphviz graph transformed from the above DOT statement is as follows.
 
 ![Graphviz graph of EXPLAIN SHOW TAGS](https://docs-cdn.nebula-graph.com.cn/docs-2.0/3.ngql-guide/16.query-tuning-statements/explain-show-tags.png)