fix(Kconfig) fix the comment in LV_THEME_DEFAULT_DARK (#2524)

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

Kconfig

@@ -52,7 +52,7 @@ menu "LVGL configuration"
                 Can be used if the UI is above another layer, e.g. an OSD menu or video player.
                 Requires `LV_COLOR_DEPTH = 32` colors and the screen's `bg_opa` should be set to
                 non LV_OPA_COVER value
-    
+
         config LV_COLOR_CHROMA_KEY_HEX
             hex "Images pixels with this color will not be drawn (if they are chroma keyed)."
             range 0x000000 0xFFFFFF
@@ -145,7 +145,7 @@ menu "LVGL configuration"
                 help
                     Only used if software rotation is enabled in the display driver.
         endmenu
-        
+
         menu "GPU"
             config LV_USE_GPU_STM32_DMA2D
                 bool "Enable STM32 DMA2D (aka Chrom Art) GPU."
@@ -499,7 +499,7 @@ menu "LVGL configuration"
             bool "A simple, impressive and very complete theme"
             default y
         config LV_THEME_DEFAULT_DARK
-            bool "Yes to set light mode, No to set dark mode"
+            bool "Yes to set dark mode, No to set light mode"
             default y
             depends on LV_USE_THEME_DEFAULT
         config LV_THEME_DEFAULT_GROW