build: Fix mom.spec.in changelog

During the rewrite of the mom build process (707326d4) an old bug in our
spec file crept back in.  The 12th of January in 2011 was on a
Wednesday.

Change-Id: Ic50c5f6ff5c9841cc22c3d5be5e118e2d65f5806
Signed-off-by: Adam Litke <alitke@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/34937
Reviewed-by: Sandro Bonazzola <sbonazzo@redhat.com>