update samples

Author: wing328

modules/openapi-generator/src/test/resources/3_0/go/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml

@@ -1367,7 +1367,7 @@ components:
       type: oauth2
       flows:
         implicit:
-          authorizationUrl: 'http://petstore.swagger.io/api/oauth/dialog'
+          authorizationUrl: 'http://localhost/api/oauth/dialog'
           scopes:
             'write:pets': modify pets in your account
             'read:pets': read your pets

samples/openapi3/client/petstore/go/go-petstore/README.md

@@ -214,7 +214,7 @@ Authentication schemes defined for the API:
 
 - **Type**: OAuth
 - **Flow**: implicit
-- **Authorization URL**: http://petstore.swagger.io/api/oauth/dialog
+- **Authorization URL**: http://localhost/api/oauth/dialog
 - **Scopes**: 
  - **write:pets**: modify pets in your account
  - **read:pets**: read your pets

samples/openapi3/client/petstore/go/go-petstore/api/openapi.yaml

@@ -2452,7 +2452,7 @@ components:
     petstore_auth:
       flows:
         implicit:
-          authorizationUrl: http://petstore.swagger.io/api/oauth/dialog
+          authorizationUrl: http://localhost/api/oauth/dialog
           scopes:
             write:pets: modify pets in your account
             read:pets: read your pets