docs: add l-armstrong as a contributor for doc (#3619)

* 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

@@ -1800,6 +1800,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "l-armstrong",
+      "name": "l-armstrong",
+      "avatar_url": "https://avatars.githubusercontent.com/u/43922258?v=4",
+      "profile": "https://github.com/l-armstrong",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -568,6 +568,7 @@ see [the contribution guide](CONTRIBUTING.rst).
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/evstratbg"><img src="https://avatars.githubusercontent.com/u/10176401?v=4?s=100" width="100px;" alt="evstrat"/><br /><sub><b>evstrat</b></sub></a><br /><a href="#infra-evstratbg" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://speakerdeck.com/eltociear"><img src="https://avatars.githubusercontent.com/u/22633385?v=4?s=100" width="100px;" alt="Ikko Eltociear Ashimine"/><br /><sub><b>Ikko Eltociear Ashimine</b></sub></a><br /><a href="https://github.com/litestar-org/litestar/commits?author=eltociear" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/taihim"><img src="https://avatars.githubusercontent.com/u/13764071?v=4?s=100" width="100px;" alt="Taimur Ibrahim"/><br /><sub><b>Taimur Ibrahim</b></sub></a><br /><a href="https://github.com/litestar-org/litestar/commits?author=taihim" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/l-armstrong"><img src="https://avatars.githubusercontent.com/u/43922258?v=4?s=100" width="100px;" alt="l-armstrong"/><br /><sub><b>l-armstrong</b></sub></a><br /><a href="https://github.com/litestar-org/litestar/commits?author=l-armstrong" title="Documentation">📖</a></td>
     </tr>
   </tbody>
 </table>