keycaps: upgrade "function keycap with text" to error
keycaps: upgrade "function keycap with text" to error

The text inside might actually be wrong/misleading. However, we exclude
the "Meta" key here, since it legitimately has a lot of names.

sknorr/suse-doc-style-checker,sknorr/suse-doc-style-checker,sknorr/suse-doc-style-checker