Fix registry ets timestamp purging (#1125)

Author: elfenlaid

lib/hex/registry/server.ex

@@ -313,8 +313,8 @@ defmodule Hex.Registry.Server do
       {{{:outer_checksum, :"$1", :"$2", :"$3"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
       {{{:retired, :"$1", :"$2", :"$3"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
       {{{:registry_etag, :"$1", :"$2"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
-      {{{:timetamp, :"$1", :"$2"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
-      {{{:timetamp, :"$1", :"$2", :"$3"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
+      {{{:timestamp, :"$1", :"$2"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
+      {{{:timestamp, :"$1", :"$2", :"$3"}, :_}, [{:"=:=", {:const, repo}, :"$1"}], [true]},
       {:_, [], [false]}
     ]
   end