swapped slack url (#12974)
swapped slack url (#12974)


mistercrunch/panoramix,airbnb/caravel,mistercrunch/panoramix,apache/incubator-superset,airbnb/caravel,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,airbnb/caravel,airbnb/caravel,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,apache/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,zhouyao1994/incubator-superset