docs: add cptrodolfox as a contributor for code (#68)

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: David Mazarro <davidmazarro98@gmail.com>

.all-contributorsrc

@@ -15,6 +15,12 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "cptrodolfox",
+      "name": "William R. Arellano",
+      "avatar_url": "https://avatars.githubusercontent.com/u/20303685?v=4",
+      "profile": "https://github.com/cptrodolfox",
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -105,6 +105,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 <table>
   <tbody>
     <tr>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/cptrodolfox"><img src="https://avatars.githubusercontent.com/u/20303685?v=4?s=100" width="100px;" alt="William R. Arellano"/><br /><sub><b>William R. Arellano</b></sub></a><br /><a href="https://github.com/stackbuilders/rollbar-haskell/commits?author=cptrodolfox" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/sestrella"><img src="https://avatars.githubusercontent.com/u/2049686?v=4?s=100" width="100px;" alt="Sebastián Estrella"/><br /><sub><b>Sebastián Estrella</b></sub></a><br /><a href="https://github.com/stackbuilders/rollbar-haskell/commits?author=sestrella" title="Code">💻</a></td>
     </tr>
   </tbody>