Update README.rst

Author: timthelion

README.rst

@@ -1,5 +1,5 @@
 .. image:: https://img.shields.io/pypi/v/django-import-export-celery.svg
-   :target: https://pypi.org/manage/project/django-import-export-celery/releases/
+   :target: https://pypi.org/project/django-import-export-celery/#history
 
 django-import-export-celery: process slow django imports and exports in celery
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