add sdk links to docs (#13266)

* add sdk links to docs

* Update docs/content/doc/advanced/api-usage.en-us.md

Co-authored-by: John Olheiser <john.olheiser@gmail.com>

Co-authored-by: Markus <git+markus@obermui.de>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>

docs/content/doc/advanced/api-usage.en-us.md

@@ -70,9 +70,9 @@ the `token=` string in a GET request.
 
 ## API Guide:
 
-API Reference guide is auto-generated by swagger and available on: 
+API Reference guide is auto-generated by swagger and available on:
     `https://gitea.your.host/api/swagger`
-    or on 
+    or on
     [gitea demo instance](https://try.gitea.io/api/swagger)
 
 
@@ -99,3 +99,8 @@ $ curl -H "X-Gitea-OTP: 123456" --request GET --url https://yourusername:yourpas
 ## Sudo
 
 The API allows admin users to sudo API requests as another user. Simply add either a `sudo=` parameter or `Sudo:` request header with the username of the user to sudo.
+
+## SDKs
+
+* [Official go-sdk](https://gitea.com/gitea/go-sdk)
+* [more](https://gitea.com/gitea/awesome-gitea#user-content-sdk)