Update all.json (#237)

scam is not even set up yet
relatively high confidence this is ripe for blocking, based on where it is hosted.
(many other scams on the same IP)

all.json

@@ -95,6 +95,7 @@
     "polkastarter.eu.com",
     "polkastarter.fund",
     "polkastarter.ws",
+    "polkaswitch.online",
     "polkawallets.site",
     "polkdot-live.network",
     "polkodot.network",