docs: add YaelChen as a contributor for code, and test (#904)

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -224,6 +224,16 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "YaelChen",
+      "name": "Yael Chen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/51058584?v=4",
+      "profile": "https://github.com/YaelChen",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ]
 }

README.md

@@ -92,6 +92,7 @@ https://github.com/hasadna/open-bus-map-search/blob/main/src/model/busStop.ts#L4
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/griseduardo"><img src="https://avatars.githubusercontent.com/u/34499486?v=4?s=100" width="100px;" alt="Eduardo Henrique Gris"/><br /><sub><b>Eduardo Henrique Gris</b></sub></a><br /><a href="#code-griseduardo" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/YaelChen"><img src="https://avatars.githubusercontent.com/u/51058584?v=4?s=100" width="100px;" alt="Yael Chen"/><br /><sub><b>Yael Chen</b></sub></a><br /><a href="#code-YaelChen" title="Code">💻</a> <a href="#test-YaelChen" title="Tests">⚠️</a></td>
     </tr>
   </tbody>
 </table>