Update config.h

src/config.h

@@ -59,6 +59,7 @@
 // Use a partial-busy wait loop, in this case frame sleeps for most of the time, but then runs a busy loop at the end for accuracy
 #define SUPPORT_PARTIALBUSY_WAIT_LOOP    1
 // Allow automatic screen capture of current screen pressing F12, defined in KeyCallback()
+// WARNING: It also requires SUPPORT_IMAGE_EXPORT and SUPPORT_FILEFORMAT_PNG flags
 #define SUPPORT_SCREEN_CAPTURE          1
 // Support CompressData() and DecompressData() functions
 #define SUPPORT_COMPRESSION_API         1