Fix description format

Author: uroni

setup.py

@@ -16,10 +16,11 @@
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.8',
+    version='0.8.1',
 
     description='Python wrapper to access and control an UrBackup server',
     long_description=long_description,
+    long_description_content_type="text/markdown",
 
     # The project's main homepage.
     url='https://github.com/uroni/urbackup-server-python-web-api-wrapper',