docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1,6 +1,5 @@
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release) ![Release](https://github.com/bboure/serverless-appsync-simulator/workflows/Release/badge.svg) <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-10-orange.svg?style=flat-square)](#contributors-)
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+[![All Contributors](https://img.shields.io/badge/all_contributors-11-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 This serverless plugin is a wrapper for [amplify-appsync-simulator](https://github.com/aws-amplify/amplify-cli/tree/master/packages/amplify-appsync-simulator) made for testing AppSync APIs built with [serverless-appsync-plugin](https://github.com/sid88in/serverless-appsync-plugin).
@@ -278,6 +277,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/LMulveyCM"><img src="https://avatars0.githubusercontent.com/u/39565663?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Lee Mulvey</b></sub></a><br /><a href="https://github.com/bboure/serverless-appsync-simulator/commits?author=LMulveyCM" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/JimmyHurrah"><img src="https://avatars1.githubusercontent.com/u/6367753?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jimmy Hurrah</b></sub></a><br /><a href="https://github.com/bboure/serverless-appsync-simulator/commits?author=JimmyHurrah" title="Code">💻</a></td>
     <td align="center"><a href="https://abda.la/"><img src="https://avatars1.githubusercontent.com/u/219340?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Abdala</b></sub></a><br /><a href="#ideas-abdala" title="Ideas, Planning, & Feedback">🤔</a></td>
+    <td align="center"><a href="https://github.com/alexandrusavin"><img src="https://avatars2.githubusercontent.com/u/1612455?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Alexandru Savin</b></sub></a><br /><a href="https://github.com/bboure/serverless-appsync-simulator/commits?author=alexandrusavin" title="Documentation">📖</a></td>
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