documentation fix from review [skip ci]

src/ZPublisher/__init__.py

@@ -91,7 +91,7 @@ def wrap(f):
 
 
 def zpublish_mark(obj):
-    """the ``zpublis`` indication at *obj*."""
+    """the ``zpublish`` indication at *obj*."""
     return getattr(obj, _ZPUBLISH_ATTR, None)