docs: add tteke as a contributor (#574)

* docs: update README.md

* docs: update .all-contributorsrc

Author: allcontributors[bot]

.all-contributorsrc

@@ -997,6 +997,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "tteke",
+      "name": "Türker Teke",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/12457162?v=4",
+      "profile": "http://turkerteke.com",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -520,6 +520,7 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/danieljcafonso"><img src="https://avatars3.githubusercontent.com/u/35337607?v=4" width="100px;" alt=""/><br /><sub><b>Daniel Afonso</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=danieljcafonso" title="Code">💻</a> <a href="https://github.com/testing-library/react-testing-library/commits?author=danieljcafonso" title="Tests">⚠️</a></td>
     <td align="center"><a href="http://www.laurensbosscher.nl"><img src="https://avatars0.githubusercontent.com/u/13363196?v=4" width="100px;" alt=""/><br /><sub><b>Laurens Bosscher</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=LaurensBosscher" title="Code">💻</a></td>
     <td align="center"><a href="https://twitter.com/__sakito__"><img src="https://avatars1.githubusercontent.com/u/15010907?v=4" width="100px;" alt=""/><br /><sub><b>Sakito Mukai</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=sakito21" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://turkerteke.com"><img src="https://avatars3.githubusercontent.com/u/12457162?v=4" width="100px;" alt=""/><br /><sub><b>Türker Teke</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=tteke" title="Documentation">📖</a></td>
   </tr>
 </table>