docs: add undefined-moe as a contributor (#6)

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

.all-contributorsrc

@@ -0,0 +1,24 @@
+{
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "undefined-moe",
+      "name": "undefined",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/29992205?v=4",
+      "profile": "https://masnn.ml/",
+      "contributions": [
+        "doc"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "MtF-Wiki",
+  "projectOwner": "mtf-wiki",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "skipCi": true
+}

README.md

@@ -1,4 +1,7 @@
 [![MtF-Wiki][logo-long]][wiki-url]
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 # 欢迎来到 **MtF Wiki**!
 
@@ -67,3 +70,22 @@ MTF Wiki 致力于成为一个免费开放且持续更新的 跨性别知识整
 [zdoc-url]: https://github.com/zzossig/hugo-theme-zdoc
 [cc-url]: https://creativecommons.org/licenses/by-sa/4.0/
 [cc-img]: https://i.creativecommons.org/l/by-sa/4.0/88x31.png
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="https://masnn.ml/"><img src="https://avatars3.githubusercontent.com/u/29992205?v=4" width="100px;" alt=""/><br /><sub><b>undefined</b></sub></a><br /><a href="https://github.com/mtf-wiki/MtF-Wiki/commits?author=undefined-moe" title="Documentation">📖</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-enable -->
+<!-- prettier-ignore-end -->
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!