$dh->downgrade
Downgrades the database one step at a time till L</previous_version_set>
-returns C<undef>. Each downgrade step will delete a C<version>from the
+returns C<undef>. Each downgrade step will delete a C<version> from the
version storage.
=method backup
=head2 prepare_resultsource_install
-see L<DBIx::Class::DeploymentHandler::HandlesDeploy/prepare_resultsouce_install>
+see L<DBIx::Class::DeploymentHandler::HandlesDeploy/prepare_resultsource_install>
=head2 install_resultsource