Update task.md

Logical Operators are explained in the next chapter. I proposed the possibility of another hint for that here from your tutorial but maybe could be better to move the exercise one chapter.

Author: maurodibert

1-js/02-first-steps/10-ifelse/4-check-login/task.md

@@ -20,6 +20,8 @@ The schema:
 
 Please use nested `if` blocks. Mind the overall readability of the code.
 
-Hint: passing an empty input to a prompt returns an empty string `''`. Pressing `key:ESC` during a prompt returns `null`.
+Hint: 
+1. passing an empty input to a prompt returns an empty string `''`. Pressing `key:ESC` during a prompt returns `null`.
+2. You should use || that we will see in detail on the next chapter. Here some info: in classical programming, the logical OR is meant to manipulate boolean values only. If any of its arguments are true, it returns true, otherwise it returns false.
 
 [demo]