docs(docs-infra): document how to configure redirects (#42452)
docs(docs-infra): document how to configure redirects (#42452)

PR Close #42452

gkalpak/angular,angular-indonesia/angular,ocombe/angular,ocombe/angular,brandonroberts/angular,shairez/angular,gkalpak/angular,gnomeontherun/angular,angular-indonesia/angular,ocombe/angular,ocombe/angular,mgechev/angular,angular/angular,manekinekko/angular,manekinekko/angular,manekinekko/angular,mgechev/angular,angular/angular,brandonroberts/angular,brandonroberts/angular,brandonroberts/angular,mgechev/angular,JiaLiPassion/angular,brandonroberts/angular,JiaLiPassion/angular,gnomeontherun/angular,shairez/angular,angular-indonesia/angular,gnomeontherun/angular,manekinekko/angular,ocombe/angular,JiaLiPassion/angular,brandonroberts/angular,mgechev/angular,gkalpak/angular,shairez/angular,JiaLiPassion/angular,manekinekko/angular,angular/angular,gnomeontherun/angular,angular/angular,ocombe/angular,shairez/angular,manekinekko/angular,gkalpak/angular,mgechev/angular,angular-indonesia/angular,shairez/angular