Closing say-as element tag

Author: ashridh

articles/cognitive-services/Speech-Service/speech-synthesis-markup.md

@@ -752,7 +752,7 @@ Pitch changes can be applied to standard voices at the word or sentence-level. W
 **Syntax**
 
 ```xml
-<say-as interpret-as="string" format="digit string" detail="string"> <say-as>
+<say-as interpret-as="string" format="digit string" detail="string"> </say-as>
 ```
 
 **Attributes**