[sponge] Change url submodule et la branche pointe vers master

.gitmodules

@@ -372,8 +372,8 @@
 	branch = master
 [submodule "sponge"]
 	path = sponge
-	url = https://sys4.fr/gitea/nalc/sponge.git
-	branch = mff
+	url = https://sys4.fr/gitea/mff/sponge.git
+	branch = master
 [submodule "sprint"]
 	path = sprint
 	url = https://sys4.fr/gitea/nalc/sprint.git