Fix package data

Author: mattwthompson

pyproject.toml

@@ -26,8 +26,8 @@ urls = { Homepage = "https://github.com/openforcefield/openff-toolkit" }
 [tool.setuptools.packages.find]
 include = [ 'openff.toolkit*' ]
 exclude = [
-    'openff.toolkit._tests*',
-    'openff.toolkit.data',  # unsure if these should be packaged
+  'openff.toolkit._tests*',
+  'openff.toolkit.data',    # unsure if these should be packaged
 ]
 
 [tool.ruff]