Merge pull request #4999 from xshaokun/fix_typo

yt/visualization/plot_container.py

@@ -1033,7 +1033,7 @@ def set_zlim(
             issue_deprecation_warning(
                 "Passing `zmax=None` explicitly is deprecated. "
                 "If you wish to explicitly set zmax to the maximal "
-                "data value, pass `zmin='max'` instead. "
+                "data value, pass `zmax='max'` instead. "
                 "Otherwise leave this argument unset.",
                 since="4.1",
                 stacklevel=5,