update a comment in the cmake

CMakeLists.txt

@@ -395,7 +395,7 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules/morse/
       # Default is DOUBLE and without THREADS|OMP
       find_package(FFTW COMPONENTS SIMPLE) # not REQUIRED
       if (FFTW_LIBRARY_DIRS_DEP)
-        set(FFT_LIBRARIES "-L${FFTW_LIBRARY_DIRS_DEP};" CACHE STRING "Set your MKL flags")
+        set(FFT_LIBRARIES "-L${FFTW_LIBRARY_DIRS_DEP};" CACHE STRING "Set your FFTW path")
       endif()
       if (FFTW_LIBRARIES_DEP)
         foreach (fft_lib ${FFTW_LIBRARIES_DEP})
@@ -455,8 +455,8 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules/morse/
         message( FATAL_ERROR "nvcc is needed with CUDA." )
       endif()
       if(NOT DEFINED CUSTOM_CUDA_FLAGS)
-        set( CUSTOM_CUDA_FLAGS "-std=c++11;-arch=sm_20;-ptxas-options=-v;-use_fast_math" CACHE
-          STRING "Set your CUDA flags, for example : -arch=sm_20;-ptxas-options=-v;-use_fast_math")
+        set( CUSTOM_CUDA_FLAGS "-std=c++11;-arch=sm_20;--ptxas-options=-v;-use_fast_math" CACHE
+          STRING "Set your CUDA flags, for example : -arch=sm_20;--ptxas-options=-v;-use_fast_math")
       endif()
       # This is needed to remove backslash after space in ADD_CUSTOM_COMMAND
       separate_arguments(CUSTOM_CUDA_FLAGS)