Docs: Add @JoanFM as a contributor

.all-contributorsrc

@@ -27,6 +27,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "JoanFM",
+      "name": "Joan Fontanals",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/19825685?v=4",
+      "profile": "https://github.com/JoanFM",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -413,7 +413,7 @@ We welcome all kinds of contributions from the open-source community, individual
 ### Contributors
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-3-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END --> 
 
 <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
@@ -423,6 +423,7 @@ We welcome all kinds of contributions from the open-source community, individual
   <tr>
     <td align="center"><a href="https://hanxiao.io/"><img src="https://avatars2.githubusercontent.com/u/2041322?v=4?s=50" width="50px;" alt=""/><br /><sub><b>Han Xiao</b></sub></a><br /><a href="https://github.com/jina-ai/jina/commits?author=hanxiao" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/nan-wang"><img src="https://avatars3.githubusercontent.com/u/4329072?v=4?s=50" width="50px;" alt=""/><br /><sub><b>Nan Wang</b></sub></a><br /><a href="https://github.com/jina-ai/jina/commits?author=nan-wang" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/JoanFM"><img src="https://avatars3.githubusercontent.com/u/19825685?v=4?s=50" width="50px;" alt=""/><br /><sub><b>Joan Fontanals</b></sub></a><br /><a href="https://github.com/jina-ai/jina/commits?author=JoanFM" title="Code">💻</a></td>
   </tr>
 </table>