update samples

Author: wing328

samples/client/petstore/julia/README.md

@@ -54,18 +54,6 @@ Class | Method
 
 ## Authorization
 
-## api_key
-- **Type**: API key
-
-Example
-```
-    using OpenAPI
-    using OpenAPI.Clients
-    import OpenAPI.Clients: Client
-    client = Client(server_uri)
-    api = MyApi(client)
-    result = callApi(api, args...; api_key)
-```
 ## petstore_auth
 - **Type**: OAuth
 - **Flow**: implicit
@@ -84,6 +72,18 @@ Example
     api = MyApi(client)
     result = callApi(api, args...; api_key)
 ```
+## api_key
+- **Type**: API key
+
+Example
+```
+    using OpenAPI
+    using OpenAPI.Clients
+    import OpenAPI.Clients: Client
+    client = Client(server_uri)
+    api = MyApi(client)
+    result = callApi(api, args...; api_key)
+```
 
 ## Author