docs: add jluxenberg as a contributor (#552)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -855,6 +855,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "jluxenberg",
+      "name": "Jared Luxenberg",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/450478?v=4",
+      "profile": "http://www.jaredlux.com",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -155,6 +155,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/BatuhanW"><img src="https://avatars3.githubusercontent.com/u/16444991?v=4" width="100px;" alt=""/><br /><sub><b>Batuhan Wilhelm</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=BatuhanW" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/deadkff01"><img src="https://avatars2.githubusercontent.com/u/5138179?v=4" width="100px;" alt=""/><br /><sub><b>Dennis Kaffer</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=deadkff01" title="Documentation">📖</a></td>
     <td align="center"><a href="http://camjackson.net"><img src="https://avatars0.githubusercontent.com/u/1930451?v=4" width="100px;" alt=""/><br /><sub><b>Cam Jackson</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=camjackson" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://www.jaredlux.com"><img src="https://avatars0.githubusercontent.com/u/450478?v=4" width="100px;" alt=""/><br /><sub><b>Jared Luxenberg</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=jluxenberg" title="Documentation">📖</a></td>
   </tr>
 </table>