George Kalpakas 1e151f9fe4 docs: fix instructions for setting up ProductDetailsComponent in start-routing.md ()
PR  switched the `getting-started` docs example from using the
index of a product in the `products` array to using the product's ID
property for indentifiying each product in the `ProductDetailsComponent`
component. However, some necessary changes in the example code and the
`start-routing.md` guide were missed in , resulting in broken
instructions for the readers (see ).

This commit is essentially a follow-up to , making the remaining
changes in the example code and the guide instructions.

Fixes 

PR Close 
2021-01-06 13:54:54 -08:00
..