docs: add mrgah as a contributor for code, and review (#503)

* 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

@@ -856,6 +856,16 @@
         "code",
         "bug"
       ]
+    },
+    {
+      "login": "mrgah",
+      "name": "mrgah",
+      "avatar_url": "https://avatars.githubusercontent.com/u/11444003?v=4",
+      "profile": "https://github.com/mrgah",
+      "contributions": [
+        "code",
+        "review"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -198,6 +198,7 @@ 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/miguelalizo"><img src="https://avatars.githubusercontent.com/u/108839050?v=4?s=100" width="100px;" alt="miguelalizo"/><br /><sub><b>miguelalizo</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=miguelalizo" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Amiguelalizo" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/pyOpenSci/python-package-guide/commits?author=miguelalizo" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/mrgah"><img src="https://avatars.githubusercontent.com/u/11444003?v=4?s=100" width="100px;" alt="mrgah"/><br /><sub><b>mrgah</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=mrgah" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Amrgah" title="Reviewed Pull Requests">👀</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/nyeshlur"><img src="https://avatars.githubusercontent.com/u/72169901?v=4?s=100" width="100px;" alt="nyeshlur"/><br /><sub><b>nyeshlur</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=nyeshlur" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Anyeshlur" title="Reviewed Pull Requests">👀</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/yang-ruoxi"><img src="https://avatars.githubusercontent.com/u/13646711?v=4?s=100" width="100px;" alt="ruoxi"/><br /><sub><b>ruoxi</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=yang-ruoxi" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Ayang-ruoxi" title="Reviewed Pull Requests">👀</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/merwok"><img src="https://avatars.githubusercontent.com/u/635179?v=4?s=100" width="100px;" alt="Éric"/><br /><sub><b>Éric</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=merwok" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Amerwok" title="Reviewed Pull Requests">👀</a></td>