doc: Add the openSUSE Pagure instance to the list of active instances

openSUSE's Pagure instance went live in the past couple of weeks,
and the instance is now fully functional as of earlier this week.

Signed-off-by: Neal Gompa <ngompa13@gmail.com>

doc/runs_here.rst

@@ -20,3 +20,5 @@ describe what you are using it for.
 +---------+---------------------------------------------------+--------------------------------+----------------------------------------------+
 | 4       | `Sergio Durigan Junior <https://sergiodj.net>`__  | https://git.sergiodj.net       | Development of personal projects             |
 +---------+---------------------------------------------------+--------------------------------+----------------------------------------------+
+| 5       | `openSUSE <https://opensuse.org>`__               | https://code.opensuse.org      | Development of openSUSE community projects   |
++---------+---------------------------------------------------+--------------------------------+----------------------------------------------+