Update elastic-san-introduction.md

Removed preview tag from snapshots

Author: adarshv98

articles/storage/elastic-san/elastic-san-introduction.md

@@ -74,7 +74,7 @@ The status of items in this table might change over time.
 | Private endpoints |	✔️ |
 | Grant network access to specific Azure virtual networks|  ✔️  |
 | Soft delete | ⛔  |
-| Snapshots (preview) | ✔️ |
+| Snapshots | ✔️ |
 
 ## Next steps