reference pointing at a "rubric" directive containing a quoted part breaks

[ArthurHerbemont]

Describe the bug
The reference text is broken when trying to display a reference pointing at a "rubric" directive containing a part that is quoted. However, a title with a quoted text is rightfully displayed by a reference

.. _reference:

.. rubric:: This rubric will be a ``broken`` reference


Let's call the :ref:`reference`

Will result in:

To Reproduce

Just use a rubric directive with a quoted text in it, as shown below:
https://arthurdherbemont.gitlab.io/sphinx-rubric-issue/
from https://gitlab.com/ArthurdHerbemont/sphinx-rubric-issue

Expected behavior
Text displayed by the reference should be displayed entirely

Your project
https://gitlab.com/ArthurdHerbemont/sphinx-rubric-issue

https://arthurdherbemont.gitlab.io/sphinx-rubric-issue/

Environment info

• OS: alpine linux
• Python version: 3.7
• Sphinx version: v3.4.1