fix(angular-getting-started) fixed some type errors on Taking Photos and Loading Photos pages

Author: Gregadeaux

docs/angular/your-first-app/2-taking-photos.md

@@ -83,7 +83,7 @@ Outside of the `PhotoService` class definition (the very bottom of the file), cr
 ```tsx
 export interface UserPhoto {
   filepath: string;
-  webviewPath: string;
+  webviewPath?: string;
 }
 ```
 

docs/angular/your-first-app/4-loading-photos.md

@@ -35,8 +35,8 @@ With the photo array data saved, create a function called `loadSaved()` that can
 ```tsx
 public async loadSaved() {
   // Retrieve cached photo array data
-  const photoList = await Preferences.get({ key: this.PHOTO_STORAGE });
-  this.photos = JSON.parse(photoList.value) || [];
+  const { value } = await Preferences.get({ key: this.PHOTO_STORAGE });
+  this.photos = (value ? JSON.parse(value) : []);
 
   // more to come...
 }

docs/angular/your-first-app/5-adding-mobile.md

@@ -93,8 +93,8 @@ Next, head back over to the `loadSaved()` function we implemented for the web ea
 ```tsx
 public async loadSaved() {
   // Retrieve cached photo array data
-  const photoList = await Preferences.get({ key: this.PHOTO_STORAGE });
-  this.photos = JSON.parse(photoList.value) || [];
+  const { value } = await Preferences.get({ key: this.PHOTO_STORAGE });
+  this.photos = (value ? JSON.parse(value) : []);
 
   // Easiest way to detect when running on the web:
   // “when the platform is NOT hybrid, do this”