fix(readme): fix badge markup

Author: quentinvernot

README.md

@@ -1,10 +1,10 @@
 <a href="#readme"><img src="https://raw.githubusercontent.com/TankerHQ/spec/master/img/tanker-logotype-blue-nomargin-350.png" alt="Tanker logo" width="175" /></a>
 
-[![License][https://img.shields.io/badge/License-Apache%202.0-blue.svg]][https://opensource.org/licenses/Apache-2.0]
-![Supported versions][https://img.shields.io/badge/python-v3.7--v3.11-blue]
-[![Code style: black][https://img.shields.io/badge/code%20style-black-000000.svg]][https://github.com/psf/black]
-[![Checked with mypy][https://img.shields.io/badge/mypy-checked-blue.svg]][https://mypy-lang.org]
-[![Build status][https://gitlab.com/TankerHQ/sdk-python/badges/master/pipeline.svg]][https://gitlab.com/TankerHQ/sdk-python/pipelines]
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+![Supported versions](https://img.shields.io/badge/python-v3.7--v3.11-blue)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![Checked with mypy](https://img.shields.io/badge/mypy-checked-blue.svg)](https://mypy-lang.org)
+[![Build status](https://gitlab.com/TankerHQ/sdk-python/badges/master/pipeline.svg)](https://gitlab.com/TankerHQ/sdk-python/pipelines)
 
 # Tanker Python SDK