Add some documentation about Rendezvous (#2749)

diff --git a/docs/Doxyfile b/docs/Doxyfile
index 1417c8c..7ec2532 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -2476,7 +2476,7 @@
 # command).
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOTFILE_DIRS           =
+DOTFILE_DIRS           = docs/dots/
 
 # The MSCFILE_DIRS tag can be used to specify one or more directories that
 # contain msc files that are included in the documentation (see the \mscfile