Fix typo in FEDORA43DEBUG configuration

Corrected a spelling error in the FEDORA43DEBUG identifier from
FEDORA42DEBUG.

Signed-off-by: Chung Chung <cchung@redhat.com>

Author: C2Redhat

perl/Permabit/CheckServer/Constants.pm

@@ -86,7 +86,7 @@ our @DIST_CLASSES = qw(CENTOS8
                        FEDORA42
                        FEDORA42DEBUG
                        FEDORA43
-                       FEDORA42DEBUG
+                       FEDORA43DEBUG
                        FEDORANEXT
                        RAWHIDE
                        RHEL6