docs: add zmdavis as a contributor for code, and bug (#1543)

* 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

@@ -1402,10 +1402,21 @@
         "code",
         "bug"
       ]
+    },
+    {
+      "login": "zmdavis",
+      "name": "Zach Davis",
+      "avatar_url": "https://avatars.githubusercontent.com/u/25305144?v=4",
+      "profile": "https://github.com/zmdavis",
+      "contributions": [
+        "code",
+        "bug"
+      ]
     }
   ],
   "repoHost": "https://github.com",
   "contributorsPerLine": 7,
   "skipCi": true,
-  "commitConvention": "angular"
+  "commitConvention": "angular",
+  "commitType": "docs"
 }

README.md

@@ -1440,6 +1440,7 @@ Thanks goes to these people ([emoji key][emojis]):
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/jeanpan"><img src="https://avatars.githubusercontent.com/u/1307026?v=4?s=100" width="100px;" alt="Jean Pan"/><br /><sub><b>Jean Pan</b></sub></a><br /><a href="https://github.com/downshift-js/downshift/commits?author=jeanpan" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://tjenkinson.me"><img src="https://avatars.githubusercontent.com/u/3259993?v=4?s=100" width="100px;" alt="Tom Jenkinson"/><br /><sub><b>Tom Jenkinson</b></sub></a><br /><a href="#infra-tjenkinson" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/aliceHendicott"><img src="https://avatars.githubusercontent.com/u/40346716?v=4?s=100" width="100px;" alt="Alice Hendicott"/><br /><sub><b>Alice Hendicott</b></sub></a><br /><a href="https://github.com/downshift-js/downshift/commits?author=aliceHendicott" title="Code">💻</a> <a href="https://github.com/downshift-js/downshift/issues?q=author%3AaliceHendicott" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/zmdavis"><img src="https://avatars.githubusercontent.com/u/25305144?v=4?s=100" width="100px;" alt="Zach Davis"/><br /><sub><b>Zach Davis</b></sub></a><br /><a href="https://github.com/downshift-js/downshift/commits?author=zmdavis" title="Code">💻</a> <a href="https://github.com/downshift-js/downshift/issues?q=author%3Azmdavis" title="Bug reports">🐛</a></td>
     </tr>
   </tbody>
 </table>