docs: add GrantIsEaton as a contributor for doc (#1072)

Author: allcontributors[bot]

.all-contributorsrc

@@ -1916,6 +1916,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "GrantIsEaton",
+      "name": "Grant Eaton",
+      "avatar_url": "https://avatars.githubusercontent.com/u/101603396?v=4",
+      "profile": "https://github.com/GrantIsEaton",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -406,6 +406,7 @@ Thanks goes to these wonderful people
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/patrady"><img src="https://avatars.githubusercontent.com/u/17067460?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Patrick Brady</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=patrady" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/GrantIsEaton"><img src="https://avatars.githubusercontent.com/u/101603396?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Grant Eaton</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=GrantIsEaton" title="Documentation">📖</a></td>
   </tr>
 </table>