DOCSP-14121: remove await on watch()

Author: terakilobyte

source/usage-examples/changeStream.txt

@@ -20,7 +20,7 @@ In the example below, the ``$match`` stage will match all change event documents
 .. code-block:: javascript
 
    const pipeline = [ { $match: { runtime: { $lt: 15 } } ];
-   const changeStream = await collection.watch(pipeline);
+   const changeStream = collection.watch(pipeline);
 
 The ``watch()`` method accepts an ``options`` object as the second parameter. Refer to the links at the end of this
 section for more information on the settings you can configure with this object.
@@ -92,7 +92,7 @@ methods presented above:
 
    .. code-block:: javascript
 
-      const changeStream = await collection.watch();
+      const changeStream = collection.watch();
       const options = { fullDocument: "updateLookup" };
       changeStream.on("change", callbackFunction, options);