wrap long lines in changelog entry
Before:
- Disable test_gdb for all arches and test_buffer for ppc64le in anticipation of the F28 mass rebuild
After:
- Disable test_gdb for all arches and test_buffer for ppc64le in anticipation of
the F28 mass rebuil
Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>