Reminder: please maintain sprints pages

[Adriaan de Groot]

Here's a wee reminder for people who organize sprints to please add a page to
	 https://community.kde.org/Sprints
at least naming the sprint and mentioning a result of that sprint. For 2019 
the second half of the year is a bit empty -- only KF6?

The sprints page is one of the places where we can show off what kind of a 
happening community KDE really is.

[ade]