pods.md incorrectly defines annotation name as AC Name instead of AC Identifier

[tgeoghegan]

In pods.md @ 01b1a02, the entry for annotations reads:

name is restricted to the AC Name formatting

This disagrees with aci.md which states:

the name is restricted to the AC Identifier formatting

It further disagrees with the Annotation struct which has:

type Annotation struct { Name ACIdentifier json:"name"Value string json:"value" }