docs: add @nadege as a contributor

.all-contributorsrc

@@ -19,6 +19,15 @@
       "contributions": [
         "maintenance"
       ]
+    },
+    {
+      "login": "nadege",
+      "name": "Nadege Michel",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3792171?v=4",
+      "profile": "https://github.com/nadege",
+      "contributions": [
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7

CONTRIBUTORS.md

@@ -8,6 +8,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 <table>
   <tr>
     <td align="center"><a href="https://joost.at/"><img src="https://avatars.githubusercontent.com/u/1708494?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Joost De Cock</b></sub></a><br /><a href="#maintenance-joostdecock" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="https://github.com/nadege"><img src="https://avatars.githubusercontent.com/u/3792171?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Nadege Michel</b></sub></a><br /><a href="https://github.com/freesewing/freesewing/commits?author=nadege" title="Tests">⚠️</a></td>
   </tr>
 </table>
 

CONTRIBUTORS_BADGE.md

@@ -1,4 +1,4 @@
 
 <!-- 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](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->