Update impl/README.md

Co-authored-by: Gonzalo Muñoz <[email protected]>

Author: fjtirado

impl/README.md

@@ -7,7 +7,7 @@ Welcome to Java SDK runtime reference implementation, a lightweight implementati
 
 Although initially conceived mainly for testing purposes, it was designed to be easily expanded, so it can eventually become production ready. 
 
-## Status. 
+## Status
 
 This reference implementation is currently capable of running workflows consisting of: