The most probable explanation is that "fgghhh" is a accidental keystroke sequence.
Designers and editors often use these strings as temporary file names that become the name for a specific aesthetic or collection. Creating Aesthetic Photos fgghhh photo
It looks like you're asking for a guide related to a photo or image with the code or name — but that doesn't match any standard photo format, file type, or known tool. The most probable explanation is that "fgghhh" is