Change openapi doc port from 3000 to 4000 to avoid clashing with adguardhome.

openapi/README.md

@@ -10,4 +10,4 @@ The easiest way would be to use [Swagger Editor](http://editor.swagger.io/) and
 
 1. `yarn install`
 2. `yarn start`
-3. Open `http://localhost:3000/`
+3. Open `http://localhost:4000/`

openapi/index.js

@@ -4,5 +4,5 @@ const app = express()
 
 app.use(express.static(__dirname))
 
-console.log('Open http://localhost:3000/ to examine the API spec')
-app.listen(3000)
+console.log('Open http://localhost:4000/ to examine the API spec')
+app.listen(4000)

openapi/package.json

@@ -9,4 +9,4 @@
         "express": "^4.16.4",
         "swagger-ui-dist": "^3.20.1"
     }
-}
+}