Fix another damned typo
diff --git a/xos/vpn/admin.py b/xos/vpn/admin.py
index 157a4f0..bfdae58 100644
--- a/xos/vpn/admin.py
+++ b/xos/vpn/admin.py
@@ -63,7 +63,7 @@
 
     def save(self, commit=True):
         self.instance.creator = self.cleaned_data.get("creator")
-        self.instance.server_key = self.cleaned_data.get("sever_key")
+        self.instance.server_key = self.cleaned_data.get("server_key")
         return super(VPNTenantForm, self).save(commit=commit)
 
     def generate_VPN_key(self):