docs: add zackw as a contributor for review

Author: lwasser

.all-contributorsrc

@@ -604,6 +604,15 @@
         "review"
       ]
     },
+    {
+      "login": "zackw",
+      "name": "Zack Weinberg",
+      "avatar_url": "https://avatars.githubusercontent.com/u/325899?v=4",
+      "profile": "https://www.owlfolio.org/",
+      "contributions": [
+        "review"
+      ]
+    },
     {
       "login": "flpm",
       "name": "Felipe Moreno",

README.md

@@ -149,6 +149,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/chenghlee"><img src="https://avatars.githubusercontent.com/u/3485949?v=4?s=100" width="100px;" alt="Cheng H. Lee"/><br /><sub><b>Cheng H. Lee</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=chenghlee" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Achenghlee" title="Reviewed Pull Requests">👀</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/Vaunty"><img src="https://avatars.githubusercontent.com/u/68826427?v=4?s=100" width="100px;" alt="Vaunty"/><br /><sub><b>Vaunty</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=Vaunty" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3AVaunty" title="Reviewed Pull Requests">👀</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://www.owlfolio.org/"><img src="https://avatars.githubusercontent.com/u/325899?v=4?s=100" width="100px;" alt="Zack Weinberg"/><br /><sub><b>Zack Weinberg</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Azackw" title="Reviewed Pull Requests">👀</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://flpm.dev"><img src="https://avatars.githubusercontent.com/u/17676929?v=4?s=100" width="100px;" alt="Felipe Moreno"/><br /><sub><b>Felipe Moreno</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Aflpm" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/pyOpenSci/python-package-guide/commits?author=flpm" title="Code">💻</a></td>
     </tr>
   </tbody>