Fix migration in cases where database name has a hyphen

priv/repo/migrations/20210121080964_add_default_text_search_config.exs

@@ -4,7 +4,7 @@ defmodule Pleroma.Repo.Migrations.AddDefaultTextSearchConfig do
   def change do
     execute("DO $$
     BEGIN
-    execute 'ALTER DATABASE '||current_database()||' SET default_text_search_config = ''english'' ';
+    execute 'ALTER DATABASE \"'||current_database()||'\" SET default_text_search_config = ''english'' ';
     END
     $$;")
   end