docs: add john-sandall as a contributor for bug (#47)

* docs: update README.md

* docs: update .all-contributorsrc

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -14,7 +14,8 @@
       "avatar_url": "https://avatars.githubusercontent.com/u/2884159?v=4",
       "profile": "https://coefficient.ai",
       "contributions": [
-        "content"
+        "content",
+        "bug"
       ]
     },
     {

README.md

@@ -138,7 +138,7 @@ I mainly run the `main.py` and `sort_yaml.py` to get new entries and move old en
 <table>
   <tbody>
     <tr>
-      <td align="center" valign="top" width="14.28%"><a href="https://coefficient.ai"><img src="https://avatars.githubusercontent.com/u/2884159?v=4?s=100" width="100px;" alt="John Sandall"/><br /><sub><b>John Sandall</b></sub></a><br /><a href="#content-john-sandall" title="Content">🖋</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://coefficient.ai"><img src="https://avatars.githubusercontent.com/u/2884159?v=4?s=100" width="100px;" alt="John Sandall"/><br /><sub><b>John Sandall</b></sub></a><br /><a href="#content-john-sandall" title="Content">🖋</a> <a href="#bug-john-sandall" title="Bug reports">🐛</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://thib.me/"><img src="https://avatars.githubusercontent.com/u/877585?v=4?s=100" width="100px;" alt="Thibaud Colas"/><br /><sub><b>Thibaud Colas</b></sub></a><br /><a href="#content-thibaudcolas" title="Content">🖋</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://tanka.la"><img src="https://avatars.githubusercontent.com/u/29096822?v=4?s=100" width="100px;" alt="Tankala Ashok"/><br /><sub><b>Tankala Ashok</b></sub></a><br /><a href="#content-tankala" title="Content">🖋</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://robdewit.nl"><img src="https://avatars.githubusercontent.com/u/7165065?v=4?s=100" width="100px;" alt="Rob de Wit"/><br /><sub><b>Rob de Wit</b></sub></a><br /><a href="#content-RCdeWit" title="Content">🖋</a></td>