refactor(ionic): add missing new line

Author: thetaPC

core/src/themes/ionic/ionic.theme.default.scss

@@ -15,4 +15,4 @@ $tabbar-ionic-background-activated: var(--ion-tab-bar-background-activated, glob
 $tabbar-ionic-background-focused: var(--ion-tab-bar-background-focused, transparent);
 $tabbar-ionic-color: var(--ion-tab-bar-color, globals.$ion-primitives-neutral-800);
 $tabbar-ionic-color-selected: var(--ion-tab-bar-color-selected, globals.$ion-text-primary);
-$tabbar-ionic-border-color: var(--ion-tab-bar-border-color, transparent);
+$tabbar-ionic-border-color: var(--ion-tab-bar-border-color, transparent);