message: Documentation: Doxygen warnings
  Based on review corrected `EXAMPLE_PATH` and `CITE_BIB_FILES`.
diff: @@ -700,7 +700,7 @@ LAYOUT_FILE =
  CITE_BIB_FILES = @CMAKE_SOURCE_DIR@/biblio/bibliography.bib \
  @CMAKE_SOURCE_DIR@/biblio/how_to_cite_cgal.bib \
  - @CMAKE_CURRENT_BINARY_DIR@/biblio/how_to_cite_gudhi.bib
  + @CMAKE_SOURCE_DIR@/biblio/how_to_cite_gudhi.bib
  #---------------------------------------------------------------------------
  # Configuration options related to warning and progress messages
  @@ -868,7 +868,7 @@ EXCLUDE_SYMBOLS =
  # that contain example code fragments that are included (see the \include
  # command).
  -EXAMPLE_PATH = @CMAKE_CURRENT_BINARY_DIR@ \
  +EXAMPLE_PATH = @CMAKE_SOURCE_DIR@ \
  @CMAKE_SOURCE_DIR@/data/ \
  @GUDHI_DOXYGEN_EXAMPLE_PATH@
  