getting bash syntax error while running this command. How to fix it?

I am trying set up solarized theme for my wsltty terminal. So I followed this 2 step guide.

https://www.steventammen.com/old-posts/basic-wsl-setup/

I did not want install fish so I only concentrated on the first 2 steps.

But when I ran this command

eval (dircolors -c ~/.dir_colors | sed 's/>&\/dev\/null$//')

it is giving me this error

-bash: syntax error near unexpected token `dircolors'