Doc update.

Author: sfence

doc/lua_api.md

@@ -8048,14 +8048,14 @@ child will follow movement and rotation of that bone.
         * `strength`: sets the strength of the volumetric light effect from 0 (off, default) to 1 (strongest)
            * This value has no effect on clients who have the "Volumetric Lighting" or "Bloom" shaders disabled.
       * `light_intensity` is a table that controls calculation of sun light color.
-        `sun_color = color_offset + color_ratio_coef*daynight_ratio` where `daynight_ratio` is not linear to day time
+        `sun_color = color_offset + color_ratio_coef*daynight_ratio` where `daynight_ratio` is not linear to day time.
         Result color lesser or equal to 0.0 means no color in light.
         Result color greater or equal to 1.0 means full color in light. 
         * `color_offset` is a table that controls red, green and blue color offsets.
           * `r` (default: `-0.04`)
           * `g` (default: `-0.04`)
           * `b` (default: `0.078`)
-        * `color_ratio_coef` is table that controls red, green and blue color ration coefficients.
+        * `color_ratio_coef` is a table that controls red, green and blue color ration coefficients.
           * `r` (default: `0.001`)
           * `g` (default: `0.001`)
           * `b` (default: `0.00098`)