News component – Expend the caption textfield

Hello everyone,

I have one question regarding the news component “slide” that I just to illustrate one article I just published.

The problem is that one of the captions doesn’t show properly and has been trimmed.

I have checked in “manage display” to change the textfield but I simply cannot find this option. I also went in “manage form display” and no such option.

Do you know where I can find this option?