fix: rename server files with transport suffix

- app.railway-mcp.json -> app.railway-mcp-npx.json (id: app.railway-mcp-npx)

Signed-off-by: Mohammod Al Amin Ashik <maa.ashik00@gmail.com>

Author: its-mash

servers/app.railway-mcp.json servers/app.railway-mcp-npx.jsonservers/app.railway-mcp.json renamed to servers/app.railway-mcp-npx.json

@@ -1,7 +1,7 @@
 {
   "$schema": "../schemas/server-definition.schema.json",
-  "id": "app.railway-mcp",
-  "name": "Railway",
+  "id": "app.railway-mcp-npx",
+  "name": "Railway (npx)",
   "alias": "railway",
   "description": "Manage Railway projects, services, and deployments. Create services, view logs, manage environment variables, and trigger deployments.",
   "icon": "https://avatars.githubusercontent.com/u/66716858?v=4",