link delete collection and add delete all reference

_includes/code/howto/manage-data.collections.py

@@ -678,6 +678,10 @@
 # START DeleteCollection
 # delete collection "Article" - THIS WILL DELETE THE COLLECTION AND ALL ITS DATA
 client.collections.delete("Article")  # Replace with your collection name
+# note: you can also delete multiple collections at once
+# client.collections.delete(["Article", "Category"])
+# or all collections of a cluster
+# client.collections.delete_all()
 # END DeleteCollection
 
 # ========================================

_includes/schema-delete-class.mdx

@@ -46,6 +46,8 @@ client.schema.delete_class("Article")  # Replace with your class name
 ```ts
 // delete collection "Article" - THIS WILL DELETE THE COLLECTION AND ALL ITS DATA
 await client.collections.delete('Article')
+// you can also delete all collections of a cluster
+// await client.collections.deleteAll()
 ```
 
 </TabItem>

developers/weaviate/manage-data/delete.mdx

@@ -381,6 +381,8 @@ client.batch().objectsBatchDeleter()
   </TabItem>
 </Tabs>
 
+## Delete All objects
+Look into <a href="/developers/weaviate/manage-data/collections#delete-a-collection">Delete a Collection</a>
 
 ## Optional parameters