[ENG-9984] Fix(add-email): fix text (#840)

- Ticket: [https://openscience.atlassian.net/browse/ENG-9984]
- Feature flag: n/a

## Purpose
Added new text in en.json to the button have proper text

Author: bodintsov

src/app/features/settings/account-settings/components/add-email/add-email.component.html

@@ -12,7 +12,7 @@
       styleClass="w-full"
       (onClick)="dialogRef.close()"
       severity="info"
-      [label]="'settings.accountSettings.addEmail.buttons.cancel' | translate"
+      [label]="'common.buttons.cancel' | translate"
     >
     </p-button>
 
@@ -22,7 +22,7 @@
       [disabled]="emailControl.invalid"
       (click)="addEmail()"
       [loading]="isSubmitting()"
-      [label]="'settings.accountSettings.addEmail.buttons.add' | translate"
+      [label]="'common.buttons.add' | translate"
     >
     </p-button>
   </div>