intro-project-owners.txt: Link to approval copy predicates
intro-project-owners.txt: Link to approval copy predicates

Link to the approval copy predicates instead of the deprecated boolean
flags that will be removed soon.

Signed-off-by: Edwin Kempin <d43fb6c98c97e553b671ed9a9318100f1de386e7@google.com>
Change-Id: I24e3a3e02a0118df2fa474d0c8647243f4d2448f
Release-Notes: skip

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