fix new lines after the docs in the autogerated scirpt

Author: giannisdoukas

ipython2cwl/repo2cwl.py

@@ -56,8 +56,7 @@ def _store_jn_as_script(notebook_path: str, git_directory_absolute_path: str, bi
         'DO NOT EDIT THIS FILE',
         'THIS FILE IS AUTO-GENERATED BY THE ipython2cwl.',
         'FOR MORE INFORMATION CHECK https://github.com/giannisdoukas/ipython2cwl',
-        '\n\n',
-        '"""',
+        '"""\n\n',
         converter._wrap_script_to_method(converter._tree, converter._variables)
     ])
     with open(script_absolute_name, 'w') as fd: