[fix] Fix compiling error in versiondocs ()

Merging branch 'fix'  into 'main'.

See merge request !1952

Tests/Functional/GUIProjectCompatibility/CMakeLists.txt

@@ -6,6 +6,8 @@ file(GLOB source_files *.cpp)
 
 add_executable(${test} ${source_files} ${CMAKE_SOURCE_DIR}/Tests/GTestWrapper/TestAll.cpp)
 
+target_include_directories(${test} PUBLIC ${CMAKE_SOURCE_DIR})
+
 target_link_libraries(${test} BornAgainGUI gtest)
 
 gtest_discover_tests(${test} DISCOVERY_TIMEOUT 300 TEST_PREFIX Functional.GUIProjectCompatibility.)