rephrase the description of the HOST_MAP capability

Co-authored-by: Jose Lopez <joselope@qti.qualcomm.com>

Author: bashbaug

extensions/cl_khr_unified_svm.asciidoc

@@ -329,7 +329,7 @@ Add to Table 5 - List of supported param_names by {clGetDeviceInfo}:
 | {CL_SVM_CAPABILITY_HOST_WRITE_KHR}
   | This type of SVM is writeable on the host without needing to map or unmap the allocation.
 | {CL_SVM_CAPABILITY_HOST_MAP_KHR}
-  | This type of SVM is accessible on the host but requires mapping and unmapping the allocation.
+  | This type of SVM can be accessed on the host by mapping and unmapping the allocation.
 | {CL_SVM_CAPABILITY_DEVICE_READ_KHR}
   | This type of SVM is accessible on the device for reading.
 | {CL_SVM_CAPABILITY_DEVICE_WRITE_KHR}