Document how RANGE QUERY supports WHERE about docs

[tisonkun]

@Taylor-lagrange Right. Thank you!

I'm moving this issue to the docs repo for further improvement.

[Taylor-lagrange]

Range query indeed support where sub clause, but where must show before align sub clause

[Taylor-lagrange]

SELECT ts, COUNT(1) RANGE '1h' as times 
    FROM 
keyboard_monitor 
   WHERE  date_trunc('day', ts) = '2024-03-11' 
ALIGN '1h'
ORDER BY ts DESC LIMIT 10;

This may solve the problem