Update docstring of DataFrame.__init__

Author: mrkn

pandas/core/frame.py

@@ -513,9 +513,9 @@ class DataFrame(NDFrame, OpsMixin):
 
     Parameters
     ----------
-    data : ndarray (structured or homogeneous), Iterable, dict, or DataFrame
-        Dict can contain Series, arrays, constants, dataclass or list-like objects. If
-        data is a dict, column order follows insertion-order. If a dict contains Series
+    data : ndarray (structured or homogeneous), Iterable, Mapping, or DataFrame
+        Mapping can contain Series, arrays, constants, dataclass or list-like objects. If
+        data is a Mapping, column order follows insertion-order. If a Mapping contains Series
         which have an index defined, it is aligned by its index. This alignment also
         occurs if data is a Series or a DataFrame itself. Alignment is done on
         Series/DataFrame inputs.