Refactor WS812FX file names

wled00/FX.cpp

@@ -24,7 +24,7 @@
   Modified heavily for WLED
 */
 
-#include "WS2812FX.h"
+#include "FX.h"
 
 #define IBN 5100
 #define PALETTE_SOLID_WRAP (paletteBlend == 1 || paletteBlend == 3)

wled00/FX_fcn.cpp

@@ -24,7 +24,7 @@
   Modified heavily for WLED
 */
 
-#include "WS2812FX.h"
+#include "FX.h"
 #include "palettes.h"
 
 #define LED_SKIP_AMOUNT  1

wled00/wled00.ino

@@ -74,7 +74,7 @@
 #include "html_mobile.h"
 #include "html_settings.h"
 #include "html_other.h"
-#include "WS2812FX.h"
+#include "FX.h"
 #include "ir_codes.h"