Fix imports

sdl1/electricField/ElecField.h

@@ -5,10 +5,10 @@
 #include <vector>
 #include <cmath>
 
-#include <SDL.h>
+#include <SDL/SDL.h>
 #undef main
 
-#include "Gfx/SDL_gfxPrimitives.h"
+#include "SDL/SDL_gfxPrimitives.h"
 
 struct Charge;
 

sdl1/electricField/main.cpp

@@ -1,5 +1,5 @@
 #include <iostream>
-#include <SDL.h>
+#include <SDL/SDL.h>
 
 #include "ElecField.h"