Update README.md

update proper plugin version

README.md

@@ -1,7 +1,7 @@
 ------
 
 [![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/license/mit)
-![PyPI](https://img.shields.io/pypi/v/PACKAGE?label=pytest-node-dependency)
+![PyPI](https://img.shields.io/pypi/pyversions/pytest-node-dependency)
 ![PyPI - Downloads](https://img.shields.io/pypi/dm/pytest-node-dependency)
 
 What?
@@ -75,4 +75,4 @@ Limitations and known issues:
 -----------------------------------------------------
 * All the tests without dependency (both dependent-on) will run first, then, all tests with connections will run
 (e.g. the list of items will be as described)
-* Currently, automated xfail is enabled, it should be configurable.
+* Currently, automated xfail is enabled, it should be configurable.