[Doc] Fix Prettier format check failure

Format the Markdown table that was added in commit 94daefd to comply
with Prettier's formatting rules. This fixes the CI format check failure.
https://github.com/modelcontextprotocol/modelcontextprotocol/actions/runs/21668476308/job/62469969079

Author: koic

docs/community/governance.mdx

@@ -21,12 +21,12 @@ All documentation (excluding specifications) will be made available under Creati
 
 The MCP project adopts a hierarchical structure, similar to Python, PyTorch, and other open source projects:
 
-| Role | Scope |
-| --- | --- |
-| **Lead Maintainers (BDFL)** | Final decision authority |
-| **Core Maintainers** | Overall project direction |
-| **Maintainers** | Working Groups, SDKs, components |
-| **Contributors** | Issues, PRs, discussions |
+| Role                        | Scope                            |
+| --------------------------- | -------------------------------- |
+| **Lead Maintainers (BDFL)** | Final decision authority         |
+| **Core Maintainers**        | Overall project direction        |
+| **Maintainers**             | Working Groups, SDKs, components |
+| **Contributors**            | Issues, PRs, discussions         |
 
 - **Contributors** file issues, make pull requests, and contribute to the project.
 - **Maintainers** drive components within the MCP project, such as SDKs, documentation, and Working Groups.