Work around the aliases bug

Sigh.

commands/everyone.py

@@ -278,6 +278,9 @@ class CmdRead(Command):
 
     def find_readable(self, searcher, readable_str):
         """Search the room for a readable item."""
+        if readable_str == "chalkboard":
+            readable_str = "shrub"
+
         targets = searcher.search(readable_str, quiet=True)
         if not targets:
             searcher.msg(f"You don't see {readable_str}.")