Use section 7 for sigsum-tools man page?

Hi. Now the sigsum-tools man page is in section 5, but I wonder if it shouldn't be in section 7?

Section 5 seems to be about file formats:

https://www.man7.org/linux/man-pages/man5/intro.5.html

Section 7 is the "other" section:

https://www.man7.org/linux/man-pages/man7/intro.7.html

For people discussing this: https://unix.stackexchange.com/questions/3586/what-do-the-numbers-in-a-man-page-mean

Comparing with pages like gittutorial which seems more similar to sigsum-tools:

https://www.man7.org/linux/man-pages/man7/gittutorial.7.html

What do you think?