fix: OPTIC-884: Incorrect block style name for prediction card (#6089)

Small fix to address an issue with release 1.13.0 and an incorrect block
style name.

`predictionCard` -> `prediction-card`

Author: bmartel

web/apps/labelstudio/src/pages/Settings/PredictionsSettings/PredictionsList.styl

@@ -1,4 +1,4 @@
-.predictionCard {
+.prediction-card {
   width: 100%;
   padding: 15px;
   border-radius: 5px;
@@ -48,4 +48,4 @@
   &:not(:first-child) {
     margin-top: 24px;
   }
-}
+}