Added compressed OW mon VRAM notice in config file (#5599)

include/config/overworld.h

@@ -39,6 +39,7 @@
 #define OW_LARGE_OW_SUPPORT            TRUE       // If true, adds a small amount of overhead to OW code so that large (48x48, 64x64) OWs will display correctly under bridges, etc.
 #define OW_PKMN_OBJECTS_SHARE_PALETTES FALSE      // [WIP!! NOT ALL PALETTES HAVE BEEN ADJUSTED FOR THIS!!] If TRUE, follower palettes are taken from battle sprites.
 #define OW_GFX_COMPRESS                TRUE       // Adds support for compressed OW graphics, (Also compresses pokemon follower graphics).
+                                                  // IMPORTANT: Gfx are loaded into VRAM to avoid continous decompression. If you require more VRAM or want to use a lot of overworld Pokémon at once, you should disable this config.
                                                   // Compressed gfx are incompatible with non-power-of-two sprite sizes:
                                                   // (You should not use 48x48 sprites/tables for compressed gfx)
                                                   // 16x32, 32x32, 64x64 etc are fine