pillowfight: rename num-instance to num-instances
pillowfight: rename num-instance to num-instances

typo

Change-Id: Id653cc407bb9607d156c11d50a249bd6bf32662d
Reviewed-on: http://review.couchbase.org/38591
Tested-by: Mark Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>
Reviewed-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

senthilkumaranb/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,senthilkumaranb/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,mnunberg/libcouchbase,PureSwift/libcouchbase,PureSwift/libcouchbase,mnunberg/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,mody/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,maxim-ky/libcouchbase,avsej/libcouchbase,mody/libcouchbase,mnunberg/libcouchbase,mnunberg/libcouchbase,mnunberg/libcouchbase,couchbase/libcouchbase,maxim-ky/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,signmotion/libcouchbase,senthilkumaranb/libcouchbase,PureSwift/libcouchbase,signmotion/libcouchbase,avsej/libcouchbase,signmotion/libcouchbase,senthilkumaranb/libcouchbase,maxim-ky/libcouchbase,avsej/libcouchbase,maxim-ky/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,signmotion/libcouchbase,PureSwift/libcouchbase