Allow Markdown formatting to come back

GitHub does not respect the Markdown without an additional line break.

pipenv/help.py

@@ -12,6 +12,7 @@ from .pep508checker import lookup
 
 def main():
     print('<details><summary>$ python -m pipenv.help output</summary>')
+    print('')
     print('Pipenv version: `{0!r}`'.format(__version__))
     print('')
     print('Pipenv location: `{0!r}`'.format(os.path.dirname(pipenv.__file__)))