ROME—The Vatican on Monday forbade blessings of same-sex relationships, contradicting calls for the practice by progressive bishops in Germany and elsewhere, and setting a limit to the conciliatory approach to gay people that has marked Pope Francis’ pontificate.The Vatican’s doctrinal office, in a document personally approved by Pope Francis, said it wasn’t permissible for clergy to pronounce blessings on any relationship outside of marriage between a man and a woman.The document reaffirms Catholic teaching on marriage and sexuality when several liberal bishops, including the head of the German Catholic bishops’ conference, have called for blessing same-sex couples in committed relationships. Priests in Germany have widely blessed such couples for years, as have clergy in some other parts of Northern Europe.