docs: update readme

README.md

@@ -8,12 +8,13 @@ Compatible with `Hollow Knight` 1.5.
 ## Features
 
 - **Fast Dream Warping**: Remove dream warping charge time when in Godhome boss fight rooms. This decrease the total warping time from 2.25s to 0.25s.
-- **Frame Rate Limit**: Create a 50ms lag in every in-game frame.
+- **Frame Rate Limit**: Create a lag in every in-game frame.
 
 ## Configuration
 
 - `fastDreamWarp` (`Boolean`): Whether to enable the Fast Dream Warping feature. Defaults to `true`.
 - `frameRateLimit` (`Boolean`): Whether to enable the Frame Rate Limit feature. Defaults to `false`.
+- `frameRateLimitMultiplier` (`Integer`): Frame rate limit time span multiplier. Final lag time is 10ms multiplied by this value. Note that setting this to `0` does not mean zero lag. Ranges from `0` to `10`, defaults to `5`.
 
 ## Contributing