docs: add jkmuka as a contributor (kentcdodds#143)

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

.all-contributorsrc

@@ -320,6 +320,15 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "jkmuka",
+      "name": "jkmuka",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/6767449?v=4",
+      "profile": "https://github.com/jkmuka",
+      "contributions": [
+        "bug"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -316,6 +316,7 @@ Thanks goes to these wonderful people
     <td align="center"><a href="https://github.com/degeens"><img src="https://avatars2.githubusercontent.com/u/33414262?v=4" width="100px;" alt=""/><br /><sub><b>Stijn Geens</b></sub></a><br /><a href="https://github.com/kentcdodds/bookshelf/commits?author=degeens" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/andresgallego"><img src="https://avatars2.githubusercontent.com/u/1014950?v=4" width="100px;" alt=""/><br /><sub><b>Andrés Gallego</b></sub></a><br /><a href="#ideas-andresgallego" title="Ideas, Planning, & Feedback">🤔</a></td>
     <td align="center"><a href="https://github.com/michaljuris"><img src="https://avatars1.githubusercontent.com/u/391000?v=4" width="100px;" alt=""/><br /><sub><b>Michal Juriš</b></sub></a><br /><a href="https://github.com/kentcdodds/bookshelf/issues?q=author%3Amichaljuris" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/jkmuka"><img src="https://avatars2.githubusercontent.com/u/6767449?v=4" width="100px;" alt=""/><br /><sub><b>jkmuka</b></sub></a><br /><a href="https://github.com/kentcdodds/bookshelf/issues?q=author%3Ajkmuka" title="Bug reports">🐛</a></td>
   </tr>
 </table>