doc: add docs for bson_append_dbpointer(3)
doc: add docs for bson_append_dbpointer(3)

mongodb/libbson,alexeyvo/libbson,Machyne/libbson,mapr/libbson,alexeyvo/libbson,remicollet/libbson,mongodb/libbson,remicollet/libbson,rayyang2000/libbson,ajdavis/libbson,jqk6/libbson,rcsanchez97/libbson,jqk6/libbson,ksuarz/libbson,mongodbinc-interns/libbson,paulmelnikow/libbson,derickr/libbson,4Second2None/libbson_tmp,derickr/libbson,Machyne/libbson,bjori/libbson,Convey-Compliance/libbson,jqk6/libbson,4Second2None/libbson_tmp,remicollet/libbson,Convey-Compliance/libbson,paulmelnikow/libbson,mongodbinc-interns/libbson,derickr/libbson,mongodbinc-interns/libbson,remicollet/libbson,derickr/libbson,ksuarz/libbson,ajdavis/libbson,paulmelnikow/libbson,Convey-Compliance/libbson,4Second2None/libbson_tmp,mongodbinc-interns/libbson,ksuarz/libbson,jqk6/libbson,alexeyvo/libbson,paulmelnikow/libbson,mapr/libbson,rayyang2000/libbson,ajdavis/libbson,rayyang2000/libbson,rayyang2000/libbson,bjori/libbson,rcsanchez97/libbson,Machyne/libbson,rcsanchez97/libbson,4Second2None/libbson_tmp,mapr/libbson,bjori/libbson,Machyne/libbson,paulmelnikow/libbson,mongodb/libbson