update spec version to v0.9.0, consistent with the XML file

Author: bashbaug

extensions/cl_khr_unified_svm.asciidoc

@@ -51,7 +51,7 @@ Working Draft
 == Version
 
 Built On: {docdate} +
-Revision: 0.2.0
+Revision: 0.9.0
 
 == Dependencies
 
@@ -1126,7 +1126,7 @@ If desired, a layered extension could add a new property to *clSVMAllocWithPrope
 [options="header"]
 |========================================
 |Version|Date|Author|Changes
-|0.2.0|2024-10-29|Ben Ashbaugh|Initial public revision.
+|0.9.0|2024-10-29|Ben Ashbaugh|Initial public revision.
 |========================================
 
 //************************************************************************