Change note to multiple cards in one row


I’ve made my own deck for the JLPT but I made a note only after creating the first 1000 vocabulary cards. I’ve edited the notes and the first cards are under the basic. In my note
I’ve added a part for the examples and remarks. I would like all my cards to be that way.

I would like to change their notes. One at a time would too much time consuming.
Therefor, I’m searching for a way to select all that have been attributed with a certain note
and mke the change in one. Does anybody knows if we can do that and if yes how?

Thanks in advance for the help!