Fix anchor links on vim registers post

[nathanshelly]

anchor links with ()/special characters don't work on https://nathanshelly.dev/blog/registers-in-vim 😢

Assuming there's no easy way to link to anchor link to headers with ()/special characters then maybe use this solution - https://gist.github.com/borekb/f83e48479aceaafa43108e021600f7e3