fixed bug where youtube search API failed to load when enabled through the settings

src/app/settings/settings.component.html

@@ -143,11 +143,11 @@
     <div *ngIf="new_config" class="container-fluid">
         <div class="row">
             <div class="col-12">
-                <mat-checkbox color="accent" [(ngModel)]="new_config['API']['use_youtube_api']"><ng-container i18n="Use YouTube API setting">Use YouTube API</ng-container></mat-checkbox>
+                <mat-checkbox color="accent" [(ngModel)]="new_config['API']['use_youtube_API']"><ng-container i18n="Use YouTube API setting">Use YouTube API</ng-container></mat-checkbox>
             </div>
             <div class="col-12">
                 <mat-form-field color="accent">
-                    <input [disabled]="!new_config['API']['use_youtube_api']" [(ngModel)]="new_config['API']['youtube_API_key']" matInput placeholder="Youtube API Key" i18n-placeholder="Youtube API Key setting placeholder" required>
+                    <input [disabled]="!new_config['API']['use_youtube_API']" [(ngModel)]="new_config['API']['youtube_API_key']" matInput placeholder="Youtube API Key" i18n-placeholder="Youtube API Key setting placeholder" required>
                     <mat-hint><a target="_blank" href="https://developers.google.com/youtube/v3/getting-started"><ng-container i18n="Youtube API Key setting hint">Generating a key is easy!</ng-container></a></mat-hint>
                 </mat-form-field>
             </div>