Fix rst file

HISTORY.rst

@@ -4,7 +4,7 @@ Release History
 ===============
 
 1.0.0-alpha0 (2024-07-12)
-+++++++++++++++++++
++++++++++++++++++++++++++
 * Use generic azure token credential for auth instead of custom lib.auth
 * Remove older Python support
 

setup.py

@@ -45,5 +45,6 @@ setup(name='azure-datalake-store',
       ],
       extras_require={ 'auth': ['azure-identity']},
       long_description=readme + '\n\n' + history,
+      long_description_content_type="text/x-rst",
       zip_safe=False,
 )