docs: add leonardol as a contributor for translation (#2721)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

---------

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

Author: allcontributors[bot]

Diff for: .all-contributorsrc

@@ -2733,6 +2733,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "leonardol",
+      "name": "Leonardo Lisanti",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1445890?v=4",
+      "profile": "https://twitter.com/llisant",
+      "contributions": [
+        "translation"
+      ]
     }
   ],
   "contributorsPerLine": 7,

Diff for: README.md

@@ -10,7 +10,7 @@
 [![Coverage](https://sonarcloud.io/api/project_badges/measure?project=iluwatar_java-design-patterns&metric=coverage)](https://sonarcloud.io/dashboard?id=iluwatar_java-design-patterns)
 [![Join the chat at https://gitter.im/iluwatar/java-design-patterns](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/iluwatar/java-design-patterns?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-300-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-301-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 <br/>
@@ -460,6 +460,7 @@ This project is licensed under the terms of the MIT license.
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/inishantjain"><img src="https://avatars.githubusercontent.com/u/121454072?v=4?s=100" width="100px;" alt="Nishant Jain"/><br /><sub><b>Nishant Jain</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=inishantjain" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/hallowshaw"><img src="https://avatars.githubusercontent.com/u/90751158?v=4?s=100" width="100px;" alt="Rhitam Chaudhury"/><br /><sub><b>Rhitam Chaudhury</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=hallowshaw" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/JerryZhao275"><img src="https://avatars.githubusercontent.com/u/132061401?v=4?s=100" width="100px;" alt="JerryZhao275"/><br /><sub><b>JerryZhao275</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=JerryZhao275" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://twitter.com/llisant"><img src="https://avatars.githubusercontent.com/u/1445890?v=4?s=100" width="100px;" alt="Leonardo Lisanti"/><br /><sub><b>Leonardo Lisanti</b></sub></a><br /><a href="#translation-leonardol" title="Translation">🌍</a></td>
     </tr>
   </tbody>
 </table>