[SYCL][Doc] Fix doxygen generation: add SYCL_INLINE_VER_NAMESPACE to PREDEFINED list (#6687)

Fixed regression caused by 3d2b25e
Root cause:
replacement of __SYCL_INLINE_NAMESPACE(cl) <- included to the list
with __SYCL_INLINE_VER_NAMESPACE(_V1) <- new and was not added to the list

Signed-off-by: Tikhomirova, Kseniya <[email protected]>

Author: KseniyaTikhomirova

sycl/doc/doxygen.cfg.in

@@ -2105,6 +2105,7 @@ INCLUDE_FILE_PATTERNS  =
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 PREDEFINED             = "__SYCL_INLINE_NAMESPACE(X)=namespace X" \
+                         "__SYCL_INLINE_VER_NAMESPACE(X)=namespace X" \
                          "__SYCL_EXPORT" \
                          "__SYCL_EXPORT_DEPRECATED(x)=" \
                          "__ESIMD_NS=sycl::ext::intel::esimd" \