DOCSP-39456 - Delete code fix (#90)

Author: mongoKart

source/write/gridfs.txt

@@ -234,8 +234,8 @@ The following example shows you how to delete a file by referencing its ``_id``
 .. literalinclude:: /includes/gridfs/gridfs.py
       :language: python
       :copyable: true
-      :start-after: start rename files
-      :end-before: end rename files
+      :start-after: start delete files
+      :end-before: end delete files
 
 .. note::