Update python-config-test.py

Author: dmitry-shibanov

tests/sources/python-config-test.py

@@ -29,7 +29,7 @@
 if pkg_installer:
     expected_lib_dir_path = '/Library/Frameworks/Python.framework/Versions/{0}.{1}/lib'.format(version_major, version_minor)
 else:
-    expected_lib_dir_path = '{os.getenv("AGENT_TOOLSDIRECTORY")}/Python/{0}/x64/lib'.format(version)
+    expected_lib_dir_path = '{0}/Python/{1}/x64/lib'.format(os.getenv("AGENT_TOOLSDIRECTORY"), version)
 
 # Check modules
 ### Validate libraries path