By default, the author of each help article along with the time of the last update of that article will appear right below its title.

You can easily disable this and hide both from your help center's "Customizer". Here's how to do this:

1. First, click on the gear icon from the menu on the left in your dashboard and choose "Customize":

2. After the template customizer page has been loaded, from the "Customization" sidebar that's open on the right, navigate to the "Article" sections and disable the "Display metadata underneath the title" option that's first on the list.

After the change has been applied, there will be no metadata displayed underneath the article's title.