updated non-streamable query in README (#29782)

### Packages impacted by this PR
@azure/cosmos

### Issues associated with this PR


### Describe the problem that is addressed by this PR
Updated non-streamable cross-partition query in README

### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?


### Are there test cases added in this PR? _(If not, why?)_


### Provide a list of related PRs _(if any)_


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request PRs)_

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- [ ] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
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- [ ] Added a changelog (if necessary)

---------

Co-authored-by: Aditishree . <[email protected]>

sdk/cosmosdb/cosmos/README.md

@@ -506,8 +506,7 @@ To execute non-streamable queries without the use of continuation tokens, you ca
 
 ```javascript
 const querySpec = {
-  query: "SELECT * FROM c WHERE c.status = @status",
-  parameters: [{ name: "@status", value: "active" }],
+  query: "SELECT c.status, COUNT(c.id) AS count FROM c GROUP BY c.status",
 };
 const queryOptions = {
   maxItemCount: 10, // maximum number of items to return per page