--- a/doc/demo_milestone1-2.md
+++ b/doc/demo_milestone1-2.md
@@ -46,7 +46,7 @@
 }
 ```
 
-**Note: ** In the future we will likely switch to substrate "2.0.0-alpha.7", in which case Weight type should be `u64`.
+**Note:** In the future we will likely switch to substrate "2.0.0-alpha.7", in which case Weight type should be `u64`.
 
 #### CreateCollection