syntax+typo fix in opencl backend
syntax+typo fix in opencl backend

marbre/arrayfire,shehzan10/arrayfire,arrayfire/arrayfire,umar456/arrayfire,ghisvail/arrayfire,shehzan10/arrayfire,ghisvail/arrayfire,munnybearz/arrayfire,umar456/arrayfire,umar456/arrayfire,arrayfire/arrayfire,marbre/arrayfire,ghisvail/arrayfire,ghisvail/arrayfire,9prady9/arrayfire,victorv/arrayfire,shehzan10/arrayfire,9prady9/arrayfire,munnybearz/arrayfire,victorv/arrayfire,munnybearz/arrayfire,bkloppenborg/arrayfire,marbre/arrayfire,merlin-ext/arrayfire,bkloppenborg/arrayfire,9prady9/arrayfire,bkloppenborg/arrayfire,marbre/arrayfire,shehzan10/arrayfire,bkloppenborg/arrayfire,arrayfire/arrayfire,merlin-ext/arrayfire,victorv/arrayfire,9prady9/arrayfire,arrayfire/arrayfire,victorv/arrayfire,merlin-ext/arrayfire,merlin-ext/arrayfire,umar456/arrayfire