Update dsl-reference.md

Rephrasing the description.

Co-authored-by: Ricardo Zanini <[email protected]>

Author: amin-nikanjam

dsl-reference.md

@@ -539,7 +539,7 @@ The [MCP Call](#mcp-call) enables workflows to interact with MCP servers that ar
 |:--|:---:|:---:|:---|
 | method | `string` | `yes` | The MCP JSON-RPC method to send.<br>*Supported values are: `initialize`, `notifications/initialized`, `prompts/list`, `prompts/get`, `notifications/prompts/list_changed`, `resources/list`, `resources/read`, `resources/templates/list`, `notifications/resources/list_changed`, `tools/list`, `tools/call`, `notifications/tools/list_changed`, `logging/setLevel`, and `notifications/message`* |
 | server | `string`\|[`endpoint`](#endpoint) | `yes` | An URI or an object that describes the MCP server to call.<br>|
-| parameters | `map` <br> `string` | `no` | The parameters for the MCP RPC method. For the `initialize` method, runtimes must default `protocolVersion` to the used version.<br>*Can be an object or a direct runtime expression.* |
+| parameters | `map` <br> `string` | `no` | The parameters for the MCP RPC method. For the `initialize` method, runtimes must set the `protocolVersion` parameter to the used version.<br>*Can be an object or a runtime expression.* |
 
 > [!NOTE]
 > On success the output is the JSON-RPC result. On failure runtimes must raise an error with type [https://serverlessworkflow.io/spec/1.0.0/errors/runtime](https://github.com/serverlessworkflow/specification/blob/main/dsl-reference.md#standard-error-types).