Updated mainfest

Signed-off-by: Maciej Kurc <mkurc@antmicro.com>

MANIFEST.in

diff --git a/MANIFEST.in b/MANIFEST.in
index d6ba619..e278e4f 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -23,6 +23,7 @@
 recursive-include docs *.txt
 recursive-include docs *.yml
 recursive-include docs Makefile
+recursive-include docs *.rst.template
 prune docs/_*
 prune docs/env