more robust example config exclusion in Makefil

Makefile

@@ -54,7 +54,7 @@ dist:
 		--exclude builds \
 		--exclude node_modules \
 		--exclude venv \
-		--exclude *example* \
+		--exclude *example.conf \
 		--exclude *local* \
 		--exclude *.pid \
 		--exclude *.swp \