PHOENIX-7323 fix twine check error

python-phoenixdb/README.rst

@@ -33,6 +33,7 @@ Extract the archive and then install it manually::
 Note that old versions of pip and setuptools have various bugs and incompatibilities that
 may result in installation errors, especially on old python versions.
 If you encounter problems while building, update your pip and setuptools, and try again::
+
     pip install --upgrade pip
     pip install --upgrade setuptools
 

python-phoenixdb/RELEASING.rst

@@ -25,6 +25,11 @@ Prepare the RC
 
 #. Make sure the dockerized tests described in README.rst run successfully
 
+#. Make sure to run twine check on the phoenixdb package files for python 2 and 3 and ensure they pass:
+
+    python setup.py sdist bdist_wheel
+    twine check dist/*
+
 #. Discuss release plans on [email protected]
 
 #. Open a ticket like https://issues.apache.org/jira/browse/PHOENIX-6529

python-phoenixdb/setup.py

@@ -67,6 +67,7 @@ def readme():
     name="phoenixdb",
     version=version,
     description="Phoenix database adapter for Python",
+    long_description_content_type="text/x-rst",
     long_description=readme(),
     author="Apache Software Foundation",
     author_email="[email protected]",