Update data-flow-tutorials.md

fix format error

Author: v-albemi

articles/data-factory/data-flow-tutorials.md

@@ -102,7 +102,7 @@ As updates are constantly made to the product, some features have added or diffe
 
 [Logging and auditing](https://www.youtube.com/watch?v=UC__LOyuf8M)
 
-[Dynamically optimize data flow cluster size at runtime](https://www.youtube.com/watch?v=jWSkJdtiJNM
+[Dynamically optimize data flow cluster size at runtime](https://www.youtube.com/watch?v=jWSkJdtiJNM)
 
 ## Mapping data flow scenarios