Wrong names of DEFINE variables.

https://www.phpbb.com/extensions/rules-and-policies/validation-policy/
Extension Validation Policy -> JavaScript and CSS

I think that $INCLUDEDED_HIGHSLIDEJS may be not supposed to be used.
There're some variables that require renaming from INCLUDEDED to INCLUDED (one of ED's is odd).

Another odd thing is a colon after 3. Composer in General section.