How to remove space

In the contact-plugin, after i hit send, a message returns with the e-mail I just sent. Like this:

——————-
Bericht verzonden (ga terug)

Naam: Rob
E-mail: [email protected]
Reactie: Test
——————-

It’s Dutch, but my question is the same nevertheless: how to remove the space in front of ‘Naam’ (Name in English).

https://ww.wp.xz.cn/plugins/jetpack/