🐛 fix project name that has hyphen

Author: chfw

templates/__init__.py.jj2

@@ -1,3 +1,3 @@
 # flake8: noqa
-from {{name}}._version import __version__
-from {{name}}._version import __author__
+from {{name|replace('-', '_')}}._version import __version__
+from {{name|replace('-', '_')}}._version import __author__