docs: fix double `will` in list mdc migration snippet (#25704)
docs: fix double `will` in list mdc migration snippet (#25704)

Also kept the Prettier formatting recommendations-omitting the trailing
whitespace. Should be good to keep.
angular/components,angular/components,crisbeto/material2,angular/components,crisbeto/material2,angular/components,crisbeto/material2,crisbeto/material2