fix(docs): rename agents/*.md to .mdx so JSX components render

packages/docs/src/content/docs/agents/registries.md → packages/docs/src/content/docs/agents/registries.mdx

@@ -14,7 +14,7 @@ submission shape each one needs.
 
 ## Official MCP Registry
 
-- Registry URL: <https://registry.modelcontextprotocol.io>
+- Registry URL: [registry.modelcontextprotocol.io](https://registry.modelcontextprotocol.io)
 - Listing: not yet listed — submission planned.
 - What an operator does: use any MCP-aware client that consumes the
   official registry feed (Glama, mcpservers.org, mcp-awesome.com all
@@ -59,7 +59,7 @@ publish fails. Same rule for PyPI README and Docker labels.
 
 ## Smithery
 
-- Registry URL: <https://smithery.ai>
+- Registry URL: [smithery.ai](https://smithery.ai)
 - Listing: not yet listed — submission planned.
 - What an operator does: open the OpenCodeHub listing on Smithery,
   click "Install" for their editor, paste the generated config block.
@@ -83,7 +83,7 @@ OpenCodeHub repo, Smithery indexes from `smithery.yaml`.
 
 ## Glama
 
-- Registry URL: <https://glama.ai/mcp/servers>
+- Registry URL: [glama.ai/mcp/servers](https://glama.ai/mcp/servers)
 - Listing: not yet listed — auto-indexes from the official MCP
   Registry, so the listing lands when registry publish lands.
 - What an operator does: browse the Glama catalog, grab the JSON
@@ -93,16 +93,16 @@ OpenCodeHub repo, Smithery indexes from `smithery.yaml`.
 
 ## awesome-mcp-servers
 
-- Registry URL: <https://github.com/punkpeye/awesome-mcp-servers> and
-  <https://github.com/appcypher/awesome-mcp-servers>.
+- Registry URL: [punkpeye/awesome-mcp-servers](https://github.com/punkpeye/awesome-mcp-servers)
+  and [appcypher/awesome-mcp-servers](https://github.com/appcypher/awesome-mcp-servers).
 - Listing: not yet listed — PR planned, one entry per repo, in the
   "Code Analysis" or "Developer Tools" category.
 - What an operator does: this is a curated GitHub README. They find
   the link, follow it to this repo, and use [Install](/opencodehub/agents/install/).
 
 ## Aggregator directories
 
-- <https://mcpservers.org> and <https://mcp-awesome.com>.
+- [mcpservers.org](https://mcpservers.org) and [mcp-awesome.com](https://mcp-awesome.com).
 - Listing: automatic — both scrape from the official MCP Registry
   plus popular awesome-lists. Inclusion lands when the official
   registry publish lands.