bug(fv_nlekepmxcin): Typo in .kps related keyboard

[mcdurdin]

Typo identified, minor:

# fv_nlekepmxcin.clean.diff
### keyboard_info
@ ["related","fv_nlha7kapmxtsin"]
- {"deprecates":false}
@ ["related","fv_nlha7kapxtsin"]
+ {"deprecates":false}

Originally posted by @mcdurdin in https://github.com/keymanapp/keyboards/issues/2423#issuecomment-2143654168

This depends on #2423 being merged, a minor bug for related keyboard metadata for this keyboard only.