docs: add mittalsam98 as a contributor for bug (#567)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

---------

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

.all-contributorsrc

@@ -141,6 +141,15 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "mittalsam98",
+      "name": "Sachin Mittal",
+      "avatar_url": "https://avatars.githubusercontent.com/u/42431274?v=4",
+      "profile": "https://myself.vercel.app/",
+      "contributions": [
+        "bug"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -128,6 +128,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/oleynikd"><img src="https://avatars.githubusercontent.com/u/3976868?v=4?s=100" width="100px;" alt="Denis"/><br /><sub><b>Denis</b></sub></a><br /><a href="https://github.com/bigcapitalhq/bigcapital/issues?q=author%3Aoleynikd" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://myself.vercel.app/"><img src="https://avatars.githubusercontent.com/u/42431274?v=4?s=100" width="100px;" alt="Sachin Mittal"/><br /><sub><b>Sachin Mittal</b></sub></a><br /><a href="https://github.com/bigcapitalhq/bigcapital/issues?q=author%3Amittalsam98" title="Bug reports">🐛</a></td>
     </tr>
   </tbody>
 </table>