Change the string "Hide everything from …" to "Block domain …" in web UI (#13178)

Blocking a domain is closer to blocking all its users than to a mute
action.

app/javascript/mastodon/locales/en.json

@@ -3,7 +3,7 @@
   "account.badges.bot": "Bot",
   "account.badges.group": "Group",
   "account.block": "Block @{name}",
-  "account.block_domain": "Hide everything from {domain}",
+  "account.block_domain": "Block domain {domain}",
   "account.blocked": "Blocked",
   "account.cancel_follow_request": "Cancel follow request",
   "account.direct": "Direct message @{name}",
@@ -34,7 +34,7 @@
   "account.share": "Share @{name}'s profile",
   "account.show_reblogs": "Show boosts from @{name}",
   "account.unblock": "Unblock @{name}",
-  "account.unblock_domain": "Unhide {domain}",
+  "account.unblock_domain": "Unblock domain {domain}",
   "account.unendorse": "Don't feature on profile",
   "account.unfollow": "Unfollow",
   "account.unmute": "Unmute @{name}",