Merge pull request #2414 from mgedmin/patch-1

Fix ReST syntax error in the PEP 517 link

docs/userguide/quickstart.rst

@@ -192,7 +192,7 @@ Uploading your package to PyPI
 ==============================
 After generating the distribution files, next step would be to upload your
 distribution so others can use it. This functionality is provided by
-``twine <https://pypi.org/project/twine/>`` and we will only demonstrate the
+`twine <https://pypi.org/project/twine/>`_ and we will only demonstrate the
 basic use here.