IVGCVSW-6262 Add Reduce Prod to documentation
IVGCVSW-6262 Add Reduce Prod to documentation

Signed-off-by: Teresa Charlin <055614f843994492feda310af0dd7304fb61904c@arm.com>
Change-Id: Icbb7115e4fe0c72d357ccb215430298e723a2253

ARM-software/armnn,ARM-software/armnn,ARM-software/armnn