Fix typos from linting (#4918)
Fix typos from linting (#4918)

Caused by https://github.com/apache/incubator-superset/pull/3847

Fixes https://github.com/apache/incubator-superset/issues/4915
zhouyao1994/incubator-superset,timifasubaa/incubator-superset,dmigo/incubator-superset,dmigo/incubator-superset,zhouyao1994/incubator-superset,airbnb/caravel,dmigo/incubator-superset,mistercrunch/panoramix,airbnb/superset,airbnb/superset,airbnb/caravel,airbnb/superset,airbnb/superset,zhouyao1994/incubator-superset,airbnb/caravel,airbnb/caravel,timifasubaa/incubator-superset,apache/incubator-superset,apache/incubator-superset,dmigo/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,apache/incubator-superset,timifasubaa/incubator-superset,zhouyao1994/incubator-superset,timifasubaa/incubator-superset,mistercrunch/panoramix,mistercrunch/panoramix