more change based on code review

Author: Vivian Hu

src/demo-app/list/list-demo.html

@@ -107,7 +107,7 @@ <h2>Nav lists</h2>
   <div>
     <h2>Action list</h2>
     <mat-action-list>
-      <button mat-list-item  *ngFor="let link of links" (click)="alertItem(link.name)">
+      <button mat-list-item *ngFor="let link of links" (click)="alertItem(link.name)">
         {{link.name}}
       </button>
     </mat-action-list>

src/lib/list/list.md

@@ -50,9 +50,7 @@ Simple action lists can use the `mat-list-item` attribute on button tag elements
 
 ```html
 <mat-action-list>
-  <button mat-list-item  *ngFor="let link of links" (click)="alertItem(link.name)">
-    {{link.name}}
-  </button>
+  <button mat-list-item *ngFor="let link of links"> {{link.name}} </button>
 </mat-action-list>
 ```
 

src/lib/list/list.scss

@@ -263,7 +263,7 @@ $mat-list-item-inset-divider-offset: 72px;
 }
 
 mat-action-list {
-  //remove the native button look and make is look like a list item
+  //remove the native button look and make it look like a list item
   button {
     background: none;
     color: inherit;

src/lib/list/list.spec.ts

@@ -145,7 +145,7 @@ describe('MatList', () => {
     items.forEach(item => expect(item._isRippleDisabled()).toBe(true));
   });
 
-  it('action list should be created successfully', () => {
+  it('should create an action list', () => {
     let fixture = TestBed.createComponent(ActionListWithOneItem);
     fixture.detectChanges();
 
@@ -207,7 +207,7 @@ class NavListWithOneAnchorItem extends BaseTestList {
 @Component({template: `
   <mat-action-list>
     <button mat-list-item>
-        Paprika
+      Paprika
     </button>
   </mat-action-list>`})
 class ActionListWithOneItem extends BaseTestList {