Fix broken links for Programming Ruby book
I've added a patch to update the links in lib/drb and lib/observer to the Programming Ruby book.
- lib/observer.rb: Update broken link to the Programming Ruby book. Patch by Zachary Scott. [ruby-trunk - Bug #6536]
- lib/drb/drb.rb: ditto.
#2 Updated by Eric Hodel about 3 years ago
- Status changed from Assigned to Closed
- % Done changed from 0 to 100