Minor update in project description

setup.py

@@ -215,10 +215,11 @@ setup(
     url="http://moves.rwth-aachen.de",
     description="stormpy - Python Bindings for Storm",
     long_description=long_description,
+    long_description_content_type='text/text/markdown',
     project_urls={
         'Documentation': 'https://moves-rwth.github.io/stormpy/',
         'Source': 'https://github.com/moves-rwth/stormpy/',
-        'Tracker': 'https://github.com/moves-rwth/stormpy/issues',
+        'Bug reports': 'https://github.com/moves-rwth/stormpy/issues',
     },
     classifiers=[
         'Intended Audience :: Science/Research',