DOCSP-18759-PIT-pre-post-images-adjustment (#1030)

Co-authored-by: jason-price-mongodb <[email protected]>

Author: jason-price-mongodb

source/reference/command/collMod.txt

@@ -311,7 +311,7 @@ To enable change stream pre- and post-images for a collection, set
 .. code-block:: javascript
 
    db.runCommand( {
-      "collMod": "orders",
+      collMod: "orders",
       changeStreamPreAndPostImages: { enabled: true }
    } )