Update faq.rst
@ -340,7 +340,7 @@ as this made it hard to distinguish between an undefined variable and a string.
Another rule is 'moustaches don't stack'. We often see this::
{{ somvar_{{other_var}} }}
{{ somevar_{{other_var}} }}
The above DOES NOT WORK, if you need to use a dynamic variable use the hostvars or vars dictionary as appropriate::