Make the documentation reproducible

Signed-off-by: Laurent Bigonville <bigon@bigon.be>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>

doc/CMakeLists.txt

@@ -13,6 +13,7 @@ if (DOXYGEN_FOUND)
     set(DOXYGEN_TAB_SIZE 4)
     set(DOXYGEN_OPTIMIZE_OUTPUT_FOR_C YES)
     set(DOXYGEN_MARKDOWN_SUPPORT YES)
+    set(DOXYGEN_FULL_PATH_NAMES NO)
 
     set(DOXYGEN_PREDEFINED DOXYGEN
                            WITH_SERVER