fix(notification): swap notifications info colours

[padulkemid]

background

recently I fallback my colorscheme into the default colorscheme and decided to not use any syntax highlighting (but this shouldn't be the case) because I think the hl tag only respects from colorscheme rather than syntax, but what I found interesting is in the setup_colors() function in which we add a default color for the notification.

in my case the bg and fg were overlapped and the notification only shows full black, and after swapping the hl for NotificationInfo it works with displaying the guifg (because in the default colorscheme, i think only guibg are declared).

here are some comparison with different "default" colorscheme...

before the swap

after the swap

steps to reproduce

1. change to default colorscheme (black background) or only have a guibg hl set
2. run query