docs: add testwill as a contributor for code (#1948)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -285,6 +285,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "testwill",
+      "name": "guangwu",
+      "avatar_url": "https://avatars.githubusercontent.com/u/8717479?v=4",
+      "profile": "https://github.com/testwill",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -341,6 +341,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://www.linkedin.com/in/charles-oconor-77187455/"><img src="https://avatars.githubusercontent.com/u/8228660?v=4?s=100" width="100px;" alt="Charles OConor"/><br /><sub><b>Charles OConor</b></sub></a><br /><a href="https://github.com/flipt-io/flipt/commits?author=charlesoconor" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/ahobson"><img src="https://avatars.githubusercontent.com/u/21983?v=4?s=100" width="100px;" alt="Andrew Hobson"/><br /><sub><b>Andrew Hobson</b></sub></a><br /><a href="https://github.com/flipt-io/flipt/commits?author=ahobson" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/rudineirk"><img src="https://avatars.githubusercontent.com/u/5260987?v=4?s=100" width="100px;" alt="Rudinei Goi Roecker"/><br /><sub><b>Rudinei Goi Roecker</b></sub></a><br /><a href="https://github.com/flipt-io/flipt/commits?author=rudineirk" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/testwill"><img src="https://avatars.githubusercontent.com/u/8717479?v=4?s=100" width="100px;" alt="guangwu"/><br /><sub><b>guangwu</b></sub></a><br /><a href="https://github.com/flipt-io/flipt/commits?author=testwill" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>