ci: fix formatting in .md files too

doc/docs.md

@@ -1679,8 +1679,8 @@ const (
 	world = '世界'
 )
 
-println(pi)
-println(world)
+println(main.pi)
+println(main.world)
 ```
 
 Constants are declared with `const`. They can only be defined

vlib/eventbus/README.md

@@ -67,7 +67,7 @@ const (
 
 fn main() {
 	// get a mutable reference to the subscriber
-	mut sub := eb.subscriber
+	mut sub := main.eb.subscriber
 	// subscribe to the 'error' event
 	sub.subscribe('error', on_error)
 	// start the work