docs+build: Prepare release of version 0.4.0

Change-Id: Ibd3129da74afa24a35115789a517e562f0a12639
Refs: #3178
diff --git a/docs/doxygen.conf.in b/docs/doxygen.conf.in
index 2760b9b..99478a8 100644
--- a/docs/doxygen.conf.in
+++ b/docs/doxygen.conf.in
@@ -1929,8 +1929,8 @@
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
 PREDEFINED             = NFD_LOG_INIT(x)= \
-                         NFD_LOG_INCLASS_TEMPLATE_SPECIALIZATION_DEFINE(x,y)= \
-                         NFD_LOG_INCLASS_2TEMPLATE_SPECIALIZATION_DEFINE(x,y,z)= \
+                         NFD_LOG_INCLASS_TEMPLATE_SPECIALIZATION_DEFINE(a,b,c)= \
+                         NFD_LOG_INCLASS_2TEMPLATE_SPECIALIZATION_DEFINE(a,b,c,d)= \
                          BOOST_STATIC_ASSERT(x)= \
                          BOOST_CONCEPT_ASSERT \
                          BOOST_CONCEPT_REQUIRES \