README: fix code blocks

README.md

@@ -56,6 +56,7 @@ is generally not a good idea.
 After new patches have been commited on top of the patched branch (or existing commits
 since the base commit have been edited or removed), the patch directories can be regenerated
 using
+
 	make update-patches
 
 If applying a patch fails because you have changed the base commit, the repository will be reset to the old `patched` branch