Update documentation

cmake/HelperMacros.cmake

 ################################################################################
-# Copyright (c) 2020-2021 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+# Copyright (c) 2020-2023 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
 #               2020 HLRS, University of Stuttgart
 #
 # This program and the accompanying materials are made available under the
@@ -232,7 +232,11 @@ function(add_openpass_target)
       endif()
 
       add_executable(${PARSED_ARG_NAME} EXCLUDE_FROM_ALL ${PARSED_ARG_HEADERS} ${PARSED_ARG_SOURCES} ${PARSED_ARG_UIS})
-
+	    
+      target_include_directories(${PARSED_ARG_NAME} PRIVATE
+        ${MANTLE_TEST_INCLUDE_DIR}
+      )
+	
       target_link_libraries(${PARSED_ARG_NAME}
         GTest::gtest
         GTest::gmock