I have reinstalled my Fedora 38 on an old laptop with only 4gigs of RAM, problem is it allocated only 2gb of tmpfs, and so far it caused me a ton of problems, it runs out of space pretty quickly, especially when installing big size sw, I've read you can modify the size of it by changing the entry in fstab, but I couldn't find a tmpfs entry there, I've searched the Arch Wiki and found this:

Mounting tmpfs at /dev/shm is handled automatically by systemd and manual configuration in fstab is not necessary.

So I believe this is the case for me, would adding a new entry inside fstab work without any issue?