message: fix documentation not being generated with Doxygen 1.8.16
diff: @@ -765,7 +765,7 @@ INPUT_ENCODING = UTF-8
  # *.md, *.mm, *.dox, *.py, *.f90, *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf,
  # *.qsf, *.as and *.js.
  -FILE_PATTERNS =
  +#FILE_PATTERNS =
  # The RECURSIVE tag can be used to specify whether or not subdirectories should
  # be searched for input files as well.
  