Text-domain missing in order-details.php, unable to translate

Hello,
I’m trying to translate your plugin to my language and some strings are not detected. I’ve checked the source codes and it turns out that the text-domian is missing in some case. Please check templates/checkout/received/order-details.php lines 32-33 (with Adults and Children)

there is:

<span class="adult"><?php printf( __( 'Adult: %d' ), $room->adult ) ?></span>
<span class="children"><?php printf( __( 'Children: %d' ), $room->child ) ?></span>

there should be:

<span class="adult"><?php printf( __( 'Adult: %d', 'opal-hotel-room-booking' ), $room->adult ) ?></span>
<span class="children"><?php printf( __( 'Children: %d', 'opal-hotel-room-booking' ), $room->child ) ?></span>

Could you please fix it? Also the pot file would require updating. Thank you.