Fix build error [skip ci]

adamtheturtle · adamtheturtle · commit ac55c4e1fba9 · 2018-09-09T17:10:05.000+01:00
diff --git a/setup.cfg b/setup.cfg
@@ -42,7 +42,7 @@ exclude=./versioneer.py,
 VCS = git
 style = pep440
 versionfile_source = src/mock_vws/_version.py
-versionfile_build = mock_vws
+versionfile_build = mock_vws/_version.py
 tag_prefix =
 parentdir_prefix = mock_vws
 
