fix .submodules

client-windows has an incorrect URL.

Change-Id: I27a1c2d33539a8d8da86a22550b7631dcc4cdf02

.gitmodules

@@ -6,7 +6,7 @@
 	url = https://gerrit-ring.savoirfairelinux.com/ring-client-gnome
 [submodule "client-windows"]
 	path = client-windows
-	url = https://gerrit-ring.savoirfairelinux.com/ring-client-widows
+	url = https://gerrit-ring.savoirfairelinux.com/ring-client-windows
 [submodule "daemon"]
 	path = daemon
 	url = https://gerrit-ring.savoirfairelinux.com/ring-daemon