add missing anchors

api/opencl_architecture.asciidoc

@@ -2220,19 +2220,19 @@ This enables versions to be ordered using standard C/C++ operators.
 A number of convenience macros are provided by the OpenCL Headers to make
 working with version numbers easier.
 
-  * {CL_VERSION_MAJOR} extracts the _major_ version from a packed
+  * {CL_VERSION_MAJOR_anchor} extracts the _major_ version from a packed
     {cl_version_TYPE}.
-  * {CL_VERSION_MINOR} extracts the _minor_ version from a packed
+  * {CL_VERSION_MINOR_anchor} extracts the _minor_ version from a packed
     {cl_version_TYPE}.
-  * {CL_VERSION_PATCH} extracts the _patch_ version from a packed
+  * {CL_VERSION_PATCH_anchor} extracts the _patch_ version from a packed
     {cl_version_TYPE}.
-  * {CL_MAKE_VERSION} returns a packed {cl_version_TYPE} from a
+  * {CL_MAKE_VERSION_anchor} returns a packed {cl_version_TYPE} from a
     _major_, _minor_ and _patch_ version.
   * {CL_VERSION_MAJOR_BITS_anchor}, {CL_VERSION_MINOR_BITS_anchor}, and
     {CL_VERSION_PATCH_BITS_anchor} are the number of bits in the
     corresponding field.
-  * {CL_VERSION_MAJOR_MASK}, {CL_VERSION_MINOR_MASK}, and
-    {CL_VERSION_PATCH_MASK} are bitmasks used to extract the
+  * {CL_VERSION_MAJOR_MASK_anchor}, {CL_VERSION_MINOR_MASK_anchor}, and
+    {CL_VERSION_PATCH_MASK_anchor} are bitmasks used to extract the
     corresponding packed fields from the version number.
 
 [source,opencl]