docs: add nischalshankar as a contributor (#278)

* docs: update README.md [skip ci]

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

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -171,6 +171,16 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "nischalshankar",
+      "name": "Nischal Shankar",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/33793411?v=4",
+      "profile": "https://github.com/nischalshankar",
+      "contributions": [
+        "code",
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -511,6 +511,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/Turreted"><img src="https://avatars2.githubusercontent.com/u/41593269?v=4" width="100px;" alt=""/><br /><sub><b>Turreted</b></sub></a><br /><a href="https://github.com/ExpDev07/coronavirus-tracker-api/commits?author=Turreted" title="Code">💻</a></td>
     <td align="center"><a href="http://ibtida.me"><img src="https://avatars1.githubusercontent.com/u/33792969?v=4" width="100px;" alt=""/><br /><sub><b>Ibtida Bhuiyan</b></sub></a><br /><a href="https://github.com/ExpDev07/coronavirus-tracker-api/commits?author=ibhuiyan17" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/james-gray"><img src="https://avatars1.githubusercontent.com/u/2904597?v=4" width="100px;" alt=""/><br /><sub><b>James Gray</b></sub></a><br /><a href="https://github.com/ExpDev07/coronavirus-tracker-api/commits?author=james-gray" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/nischalshankar"><img src="https://avatars2.githubusercontent.com/u/33793411?v=4" width="100px;" alt=""/><br /><sub><b>Nischal Shankar</b></sub></a><br /><a href="https://github.com/ExpDev07/coronavirus-tracker-api/commits?author=nischalshankar" title="Code">💻</a> <a href="https://github.com/ExpDev07/coronavirus-tracker-api/commits?author=nischalshankar" title="Documentation">📖</a></td>
   </tr>
 </table>