[OPENENGSB-255] add OPENENGSB-255 to know-issue page
[OPENENGSB-255] add OPENENGSB-255 to know-issue page

Signed-off-by: Andreas Pieber <57efbcbb22ec0bd89955a40df26b44c340d3e38d@gmail.com>
(cherry picked from commit 3eee36145caeae82af632a4347ec0d758fe5f0d7)

Signed-off-by: Andreas Pieber <57efbcbb22ec0bd89955a40df26b44c340d3e38d@gmail.com>

openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb