Fix configuration conflict in doxygen 1.10.0

doc/CMakeLists.txt

@@ -14,7 +14,12 @@ if(SFML_OS_WINDOWS)
                  PATHS "C:/Program Files/HTML Help Workshop" "C:/Program Files (x86)/HTML Help Workshop"
                  DOC "HTML Help Compiler program")
     if(DOXYGEN_HHC_PROGRAM)
-        set(DOXYGEN_GENERATE_HTMLHELP YES)
+        if(DOXYGEN_VERSION VERSION_LESS "1.10.0")
+            set(DOXYGEN_GENERATE_HTMLHELP YES)
+        else()
+            message("Due to conflicts with the HTML output settings in Doxygen ${DOXYGEN_VERSION}, the HTML Help generation will be disabled")
+            set(DOXYGEN_GENERATE_HTMLHELP NO)
+        endif()
     else()
         set(DOXYGEN_GENERATE_HTMLHELP NO)
     endif()