docs: add peterh-capella as a contributor for doc (#1465)

Author: allcontributors[bot]

.all-contributorsrc

@@ -2773,6 +2773,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "peterh-capella",
+      "name": "Peter Hentges",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1122723?v=4",
+      "profile": "https://github.com/peterh-capella",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -528,6 +528,7 @@ Thanks goes to these wonderful people
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/ezzatron"><img src="https://avatars.githubusercontent.com/u/100152?v=4?s=100" width="100px;" alt="Erin"/><br /><sub><b>Erin</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=ezzatron" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://www.linkedin.com/in/nan-chen-000/"><img src="https://avatars.githubusercontent.com/u/23487984?v=4?s=100" width="100px;" alt="Nan Chen"/><br /><sub><b>Nan Chen</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=nchen000" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://alexanderburdiss.com"><img src="https://avatars.githubusercontent.com/u/31200600?v=4?s=100" width="100px;" alt="Alexander Burdiss"/><br /><sub><b>Alexander Burdiss</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=aburdiss" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/peterh-capella"><img src="https://avatars.githubusercontent.com/u/1122723?v=4?s=100" width="100px;" alt="Peter Hentges"/><br /><sub><b>Peter Hentges</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=peterh-capella" title="Documentation">📖</a></td>
     </tr>
   </tbody>
 </table>