Fixing mcp reference examples (#548)

* overview

* remove clients from reference

* removed sharing and added a callout to server types in the transports page

Author: torresmateo

app/en/references/mcp/python/_meta.tsx

@@ -12,15 +12,9 @@ const meta: MetaRecord = {
   overview: {
     title: "Overview",
   },
-  clients: {
-    title: "Clients",
-  },
   transports: {
     title: "Transports",
   },
-  sharing: {
-    title: "Sharing",
-  },
   server: {
     title: "Server",
   },