[vcs-log] improve git.log.fix.merge.commits.parents.order property description
[vcs-log] improve git.log.fix.merge.commits.parents.order property description

allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community