minor fixes for system SVM allocated by driver APIs

Author: bashbaug

extensions/cl_khr_unified_svm.asciidoc

@@ -231,7 +231,7 @@ No SVM free flags are added by this extension:
 typedef cl_bitfield         cl_svm_free_flags_khr;
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-Enumeration type and values for the _param_name_ parameter to {clGetSVMPointerInfoKHR} to query information about an SVM allocation.
+Enumeration type and values for the _param_name_ parameter to {clGetSVMPointerInfoKHR} to query information about SVM allocations made by {clSVMAllocWithPropertiesKHR} or {clSVMAlloc}.
 
 [source]
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@@ -378,12 +378,12 @@ The following table provides a high-level summary of SVM capabilities for some c
 | Host | Yes | Host | N/A
 | Any Device | Yes (perhaps over a bus, such as PCIe) | Device | No
 
-.3+| **Shared SVM** .3+| Host, or Associated Device, or Unspecified
+.3+| **Shared SVM** .3+| Associated Device or Unspecified
 | Host | Yes | Host | Yes
 | Associated Device | Yes | Device | Yes
 | Another Device | Not With This Extension | Another Device | Not With This Extension
 
-.2+| **Shared System SVM** .2+| Host
+.2+| **Shared System SVM** .2+| Associated Device or Unspecified
 | Host | Yes | Host | Yes
 | Device | Yes | Device | Yes