docs: add rafaelss95 as a contributor (#160)

Author: allcontributors[bot]

.all-contributorsrc

@@ -129,6 +129,17 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "rafaelss95",
+      "name": "Rafael Santana",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/11965907?v=4",
+      "profile": "https://github.com/rafaelss95",
+      "contributions": [
+        "code",
+        "test",
+        "bug"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -199,6 +199,7 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://www.linkedin.com/in/serkan-sipahi-59b20081/"><img src="https://avatars2.githubusercontent.com/u/1880749?v=4" width="100px;" alt=""/><br /><sub><b>Bitcollage</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=SerkanSipahi" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/krokofant"><img src="https://avatars0.githubusercontent.com/u/5908498?v=4" width="100px;" alt=""/><br /><sub><b>Emil Sundin</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=krokofant" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Ombrax"><img src="https://avatars0.githubusercontent.com/u/7486723?v=4" width="100px;" alt=""/><br /><sub><b>Ombrax</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=Ombrax" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/rafaelss95"><img src="https://avatars0.githubusercontent.com/u/11965907?v=4" width="100px;" alt=""/><br /><sub><b>Rafael Santana</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=rafaelss95" title="Code">💻</a> <a href="https://github.com/testing-library/angular-testing-library/commits?author=rafaelss95" title="Tests">⚠️</a> <a href="https://github.com/testing-library/angular-testing-library/issues?q=author%3Arafaelss95" title="Bug reports">🐛</a></td>
   </tr>
 </table>