[sip-15] Fixing typo in docstring (#9377)
[sip-15] Fixing typo in docstring (#9377)


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