COMPMID-1934: Doxygen online documentation errors on Firefox

Change-Id: I669d57380d95760399cd7fd28c58d0e636d706dd
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/647
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez <pablo.tello@arm.com>
diff --git a/docs/Doxyfile b/docs/Doxyfile
index 34c7b00..22ce889 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -1,4 +1,4 @@
-# Doxyfile 1.8.9.1
+# Doxyfile 1.8.15
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.