fixup! feat(cdk/scrolling): make scroller element configurable for virtual scrolling

Author: spike-rabbit

src/cdk/scrolling/virtual-scrollable-element.ts

@@ -15,7 +15,7 @@ import {CdkVirtualScrollable, VIRTUAL_SCROLLABLE} from './virtual-scrollable';
  * Provides a virtual scrollable for the element it is attached to.
  */
 @Directive({
-  selector: '[cdk-virtual-scrollable-element], [cdkVirtualScrollableElement]',
+  selector: '[cdkVirtualScrollingElement]',
   providers: [{provide: VIRTUAL_SCROLLABLE, useExisting: CdkVirtualScrollableElement}],
   host: {
     'class': 'cdk-virtual-scrollable',

src/cdk/scrolling/virtual-scrollable-window.ts

@@ -17,7 +17,7 @@ import {CdkVirtualScrollable, VIRTUAL_SCROLLABLE} from './virtual-scrollable';
  * Provides as virtual scrollable for the global / window scrollbar.
  */
 @Directive({
-  selector: 'cdk-virtual-scroll-viewport[scrollable-window]',
+  selector: 'cdk-virtual-scroll-viewport[scrollWindow]',
   providers: [{provide: VIRTUAL_SCROLLABLE, useExisting: CdkVirtualScrollableWindow}],
 })
 export class CdkVirtualScrollableWindow extends CdkVirtualScrollable {