Add note about using the /_error page directly to custom error page article (#39671)
Add note about using the /_error page directly to custom error page article (#39671)

See https://github.com/vercel/next.js/issues/39144

It's not completely clear that `/_error` should not be used as a normal page. Added a note under `Caveats` in the custom error page article

JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js