Improve wait transcoding help

client/src/app/+videos/+video-edit/shared/video-edit.component.html

@@ -147,7 +147,7 @@
               </ng-template>
 
               <ng-template ptTemplate="help">
-                <ng-container i18n>If you decide not to wait for transcoding before publishing the video, it could be unplayable until transcoding ends.</ng-container>
+                <ng-container i18n>The video may be unplayable during the transcoding process. It's the reason why we prefer to publish publicly the video after transcoding.</ng-container>
               </ng-template>
             </my-peertube-checkbox>