docs(usage): setting angular usage example to be typescript (#14469)

core/src/components/action-sheet/usage/angular.md

@@ -1,4 +1,4 @@
-```javascript
+```typescript
 import { Component } from '@angular/core';
 import { ActionSheetController } from '@ionic/angular';
 

core/src/components/alert/usage/angular.md

@@ -1,4 +1,4 @@
-```javascript
+```typescript
 import { Component } from '@angular/core';
 import { AlertController } from '@ionic/angular';
 

core/src/components/backdrop/usage/angular.md

@@ -15,7 +15,7 @@
 <ion-backdrop [tappable]="enableBackdropDismiss" [visible]="showBackdrop" [stopPropagation]="shouldPropagate"></ion-backdrop>
 ```
 
-```javascript
+```typescript
 import { Component } from '@angular/core';
 
 @Component({

core/src/components/loading/usage/angular.md

@@ -1,4 +1,4 @@
-```javascript
+```typescript
 import { Component } from '@angular/core';
 import { LoadingController } from '@ionic/angular';
 

core/src/components/popover/usage/angular.md

@@ -1,4 +1,4 @@
-```javascript
+```typescript
 import { Component } from '@angular/core';
 import { PopoverController } from '@ionic/angular';
 

core/src/components/segment-button/usage/angular.md

@@ -47,7 +47,7 @@
 </ion-segment>
 ```
 
-```javascript
+```typescript
 import { Component } from '@angular/core';
 
 @Component({

core/src/components/segment/usage/angular.md

@@ -55,7 +55,7 @@
 </ion-toolbar>
 ```
 
-```javascript
+```typescript
 import { Component } from '@angular/core';
 
 @Component({

core/src/components/select/usage/angular.md

@@ -105,7 +105,7 @@
 </ion-list>
 ```
 
-```javascript
+```typescript
 import { Component } from '@angular/core';
 
 @Component({