fix: heading style

Author: mabuyo

docs/source/guides/auth-auth0.mdx

@@ -225,7 +225,7 @@ Before continuing, you need to set up the Auth0 client to accept an additional c
 
 </ExpansionPanel>
 
-## Step 5: Make requests with an MCP Client (Goose)
+### Step 5: Make requests with an MCP Client (Goose)
 
 In order to get the full experience of using and MCP server authorization, you'll want to use an LLM of some sort.
 There are many different AI assistants, but a particularly developer-friendly client for interacting with many of them is [Goose](https://block.github.io/goose/).