Fix typo

docs/feature_rgblight.md

@@ -130,7 +130,7 @@ The following options are used to tweak the various animations:
 |------------------------------------|-------------|-----------------------------------------------------------------------------------------------|
 |`RGBLIGHT_EFFECT_BREATHE_CENTER`    |*Not defined*|If defined, used to calculate the curve for the breathing animation. Valid values are 1.0 to 2.7 |
 |`RGBLIGHT_EFFECT_BREATHE_MAX`       |`255`        |The maximum brightness for the breathing mode. Valid values are 1 to 255                       |
-|`RGBLIGHT_EFFECT_CHRISTMAS_INTERVAL`|`40`         |How long (in millicseconds) to wait between animation steps for the "Christmas" animation      |
+|`RGBLIGHT_EFFECT_CHRISTMAS_INTERVAL`|`40`         |How long (in milliseconds) to wait between animation steps for the "Christmas" animation       |
 |`RGBLIGHT_EFFECT_CHRISTMAS_STEP`    |`2`          |The number of LEDs to group the red/green colors by for the "Christmas" animation              |
 |`RGBLIGHT_EFFECT_KNIGHT_LED_NUM`    |`RGBLED_NUM` |The number of LEDs to have the "Knight" animation travel                                       |
 |`RGBLIGHT_EFFECT_KNIGHT_LENGTH`     |`3`          |The number of LEDs to light up for the "Knight" animation                                      |