Update docs/installation-guides/install-copilot-cli.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 2 people

docs/installation-guides/install-copilot-cli.md

@@ -27,7 +27,7 @@ You can configure the GitHub MCP server in Copilot CLI using either the interact
 
 Use the Copilot CLI to interactively add the MCP server:
 
-```
+```bash
 /mcp add
 ```