doc: document goal to have examples
As discussed in next-10 mini-summit on documentation see minutes where next steps were discussed - https://github.com/nodejs/next-10/blob/main/meetings/2022-02-16.md and minutes from summit - https://github.com/nodejs/next-10/blob/main/meetings/2022-02-16.md
Signed-off-by: Michael Dawson mdawson@devrus.com