update spark merge supported version

Author: annie-mac

articles/cosmos-db/merge.md

@@ -24,7 +24,7 @@ To get started using partition merge, navigate to the **Features** page in your
 Before enabling the feature, verify that your Azure Cosmos DB account(s) meet all the [preview eligibility criteria](#preview-eligibility-criteria). Once you've enabled the feature, it takes 15-20 minutes to take effect.
 
 > [!CAUTION]
-> When merge is enabled on an account, only requests from .NET SDK version >= 3.27.0 or Java SDK >= 4.42.0 will be allowed on the account, regardless of whether merges are ongoing or not. Requests from other SDKs (older .NET SDK, older Java SDK, any JavaScript SDK, any Python SDK, any Go SDK) or unsupported connectors (Azure Data Factory, Azure Search, Azure Functions, Azure Stream Analytics, and others) will be blocked and fail. Ensure you have upgraded to a supported SDK version before enabling the feature. After the feature is enabled or disabled, it may take 15-20 minutes to fully propagate to the account. If you plan to disable the feature after you've completed using it, it may take 15-20 minutes before requests from SDKs and connectors that are not supported for merge are allowed.
+> When merge is enabled on an account, only requests from .NET SDK version >= 3.27.0 or Java SDK >= 4.42.0 or Azure Cosmos DB Spark connector >= 4.18.0 will be allowed on the account, regardless of whether merges are ongoing or not. Requests from other SDKs (older .NET SDK, older Java SDK, any JavaScript SDK, any Python SDK, any Go SDK) or unsupported connectors (Azure Data Factory, Azure Search, Azure Functions, Azure Stream Analytics, and others) will be blocked and fail. Ensure you have upgraded to a supported SDK version before enabling the feature. After the feature is enabled or disabled, it may take 15-20 minutes to fully propagate to the account. If you plan to disable the feature after you've completed using it, it may take 15-20 minutes before requests from SDKs and connectors that are not supported for merge are allowed.
 
 :::image type="content" source="media/merge/merge-feature-blade.png" alt-text="Screenshot of Features pane and Partition merge feature.":::