fix(scss notation): fix & notation for tooltips (#4997)

Author: kflournoy-sf

ui/components/tooltips/base/_deprecate.scss

@@ -5,11 +5,11 @@
 
   .slds-tooltip {
     @include popover($color: $color-background-inverse);
+  }
 
-    &__body {
-      padding: $spacing-x-small $spacing-small;
-      font-size: $font-size-2;
-      color: $color-text-inverse;
-    }
+  .slds-tooltip__body {
+    padding: $spacing-x-small $spacing-small;
+    font-size: $font-size-2;
+    color: $color-text-inverse;
   }
 }