pocketbeagle: update cape links

pocketbeagle/ch08.rst

 .. _pocketbeagle_pocketcape_support:
 
-PocketCape Support
+PocketBeagle Cape Support
 ==========================
 
 This is a placeholder for recommendations for those building their own
-PocketCape designs. If you'd like to join the conversation 
-`'check out the discussion on the google group for PocketBeagle' <https://groups.google.com/forum/#!category-topic/beagleboard/pocketbeagle/Uxx_9ce2YHM>`__
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+PocketBeagle Cape designs. If you'd like to join the conversation 
+`'check out the discussion on the forum for PocketBeagle' <https://forum.beagleboard.org/t/pocketbeagle-headers/26861>`__
+
+See also PocketBeagle under `'BeagleBoard Capes' <https://git.beagleboard.org/beagleboard/capes>`__
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