DOCSP-39726: Usage Example that describe query (#114)

# Pull Request Info

[PR Reviewing
Guidelines](https://github.com/mongodb/docs-java/blob/master/REVIEWING.md)

[JIRA ](https://jira.mongodb.org/browse/DOCSP-30726#r1226735778)

Staging -
[UpdateMany](https://docs-mongodbcom-staging.corp.mongodb.com/kotlin/docsworker-xlarge/DOCSP-39726-Usage-Example-describe-query/usage-examples/updateMany/)
page,
[updateOne](https://docs-mongodbcom-staging.corp.mongodb.com/kotlin/docsworker-xlarge/DOCSP-39726-Usage-Example-describe-query/usage-examples/updateOne/)
page

## Self-Review Checklist

- [x] Is this free of any warnings or errors in the RST?
- [x] Did you run a spell-check?
- [x] Did you run a grammar-check?
- [x] Are all the links working?

(cherry picked from commit 7c36250)

source/usage-examples/updateMany.txt

@@ -56,8 +56,11 @@ bottom of this page.
 Example
 -------
 
-In this example, we update documents that match our query in the ``movies``
-collection of the ``sample_mflix`` database. We perform the following
+In this example, we use a ``Filter`` builder to filter our query for
+movies in the genre "Frequently Discussed". 
+
+Next, we update documents that match our query in the ``movies`` collection of the
+``sample_mflix`` database. We perform the following
 updates to the matching documents:
 
 - Add ``Frequently Discussed`` to the array of ``genres`` only if it does not

source/usage-examples/updateOne.txt

@@ -54,7 +54,10 @@ bottom of this page.
 Example
 -------
 
-In this example, we perform the following updates to the first match for our query 
+In this example, we use a ``Filter`` builder to query the collection for
+a movie with the title "Cool Runnings 2". 
+
+Next, we perform the following updates to the first match for our query
 in the ``movies`` collection of the ``sample_mflix`` database:
 
 #. Set the value of ``runtime`` to ``99``