[net.news.config] Site name change for hpda2 and hpda3

ld (02/07/83)

The two sites hpda2 and hpda3 have been renamed hpdb and hpdc respectively.

The contact is: Larry Dwyer (for now)
		Hewlett Packard Co.
		11000 Wolfe Rd.
		Cupertino, Ca 95014
		(408) 257-7000 x2095
		ucbvax!hpda!ld