docs: add daltonm-bls as a contributor for bug (#598)

* 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

@@ -168,6 +168,15 @@
         "code",
         "doc"
       ]
+    },
+    {
+      "login": "daltonm-bls",
+      "name": "daltonm-bls",
+      "avatar_url": "https://avatars.githubusercontent.com/u/78225214?v=4",
+      "profile": "https://github.com/daltonm-bls",
+      "contributions": [
+        "bug"
+      ]
     }
   ],
   "contributorsPerLine": 8,

README.md

@@ -234,6 +234,7 @@ Thanks goes to these wonderful people:
     </tr>
     <tr>
       <td align="center" valign="top" width="12.5%"><a href="https://dsliwka.github.io/"><img src="https://avatars.githubusercontent.com/u/49401450?v=4?s=100" width="100px;" alt="Dirk Sliwka"/><br /><sub><b>Dirk Sliwka</b></sub></a><br /><a href="https://github.com/py-econometrics/pyfixest/commits?author=dsliwka" title="Code">💻</a> <a href="https://github.com/py-econometrics/pyfixest/commits?author=dsliwka" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="12.5%"><a href="https://github.com/daltonm-bls"><img src="https://avatars.githubusercontent.com/u/78225214?v=4?s=100" width="100px;" alt="daltonm-bls"/><br /><sub><b>daltonm-bls</b></sub></a><br /><a href="https://github.com/py-econometrics/pyfixest/issues?q=author%3Adaltonm-bls" title="Bug reports">🐛</a></td>
     </tr>
   </tbody>
 </table>