Updates templater: 3f31d3d Fix sphinx and main Makefile location

diff --git a/templater b/templater
index dbc433d36b347a4aaa114b50f99d2506b2b9efcf..3f31d3da4a87ce2e08542de8fdbaa1de951385fa 160000 (submodule)
--- a/templater
+++ b/templater
@@ -1 +1 @@
-Subproject commit dbc433d36b347a4aaa114b50f99d2506b2b9efcf
+Subproject commit 3f31d3da4a87ce2e08542de8fdbaa1de951385fa