Update README.md

Author: ZLOI27

README.md

@@ -9,6 +9,7 @@
 [![Technical Debt](https://sonarcloud.io/api/project_badges/measure?project=ZLOI27_python-project-49&metric=sqale_index)](https://sonarcloud.io/summary/new_code?id=ZLOI27_python-project-49)
 [![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=ZLOI27_python-project-49&metric=sqale_rating)](https://sonarcloud.io/summary/new_code?id=ZLOI27_python-project-49)
 [![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=ZLOI27_python-project-49&metric=vulnerabilities)](https://sonarcloud.io/summary/new_code?id=ZLOI27_python-project-49)
+[![Coverage](https://sonarcloud.io/api/project_badges/measure?project=ZLOI27_python-project-49&metric=coverage)](https://sonarcloud.io/summary/new_code?id=ZLOI27_python-project-49)
 
 ### Hexlet tests and linter status:
 [![Actions Status](https://github.com/ZLOI27/python-project-49/actions/workflows/hexlet-check.yml/badge.svg)](https://github.com/ZLOI27/python-project-49/actions)