Update docs/toolhive/tutorials/custom-registry.mdx

Co-authored-by: Copilot <[email protected]>

Author: rdimitrov

docs/toolhive/tutorials/custom-registry.mdx

@@ -113,8 +113,7 @@ Create a new file called `registry.json` and add the following content:
 This registry defines:
 
 - A single MCP server called `my-fetch` in the top-level `servers` section
-- A group called `dev-toolkit` with its own independent server called
-  `fetch-tool`
+- A group called `dev-toolkit` with its own independent server called `fetch-tool`
 
 Groups are optional - you can omit the entire `groups` section if you only need
 individual servers. Groups are independent entities that contain their own