Update relative position of libsyclinterface include files

Author: oleksandr-pavlyk

docs/CMakeLists.txt

@@ -26,7 +26,7 @@ function(_setup_doxygen)
     if(DPCTL_ENABLE_DOXYGEN_HTML)
         set(GENERATE_HTML "YES")
     endif()
-    set(DOXYGEN_INPUT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../libsyclinterface/include)
+    set(DOXYGEN_INPUT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../libsyclinterface/include/syclinterface)
     set(DOXYGEN_OUTPUT_DIR ${DOC_OUTPUT_DIR}/doxygen)
     set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/xml/index.xml)
     set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)