Update README.md

Author: AidanBeltonS

SYCL/README.md

@@ -111,7 +111,7 @@ Defaults to AMD if no value is given. Supported values are:
  - **AMD**    - for ROCm to target AMD GPUs
  - **NVIDIA** - for ROCm to target NVIDIA GPUs
 
- ***MCPU*** Please not, flag must be set for when using ROCm triple. 
+ ***MCPU*** Flag must be set for when using ROCm triple. 
  For example it may be set to "gfx906".