Switch to official SDL repo (#11)

MrStahlfelge · web-flow · commit c70d4e19b907 · 2021-12-07T10:42:45.000+01:00
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "jni/SDL"]
 	path = SDL
-	url = https://github.com/SDL-mirror/SDL
+	url = https://github.com/libsdl-org/SDL
