Refs #17785 -- Made docstring for sqlite3's get_relations() consistent with other backends.

    def get_relations(self, cursor, table_name):

        """

        Returns a dictionary of {field_index: (field_index_other_table, other_table)}

        representing all relationships to the given table. Indexes are 0-based.

        Return a dictionary of {field_name: (field_name_other_table, other_table)}

        representing all relationships to the given table.

        """

        # Dictionary of relations to return

        relations = {}