fix word `encourter` to `encounter`
fix word `encourter` to `encounter`

Signed-off-by: czm <95e483674d6aaddca68d52cac2554f8971532662@daocloud.io>

keegancsmith/prometheus,alileza/prometheus,Gouthamve/prometheus,keegancsmith/prometheus,keegancsmith/prometheus,keegancsmith/prometheus,Gouthamve/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,kangwoo/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,prometheus/prometheus,Gouthamve/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,alileza/prometheus,prometheus/prometheus,GoogleCloudPlatform/prometheus,prometheus/prometheus,keegancsmith/prometheus,prometheus/prometheus,kangwoo/prometheus,Gouthamve/prometheus,prometheus/prometheus,GoogleCloudPlatform/prometheus