bpo-19737: Improved the documentation for globals (GH-29823) (GH-30042)

Co-authored-by: Alex Waygood <[email protected]>
Co-authored-by: Łukasz Langa <[email protected]>
(cherry picked from commit 4fe5585)

Co-authored-by: 180909 <[email protected]>

Author: miss-islington

Doc/library/functions.rst

@@ -686,9 +686,9 @@ are always available.  They are listed here in alphabetical order.
 
 .. function:: globals()
 
-   Return a dictionary representing the current global symbol table. This is always
-   the dictionary of the current module (inside a function or method, this is the
-   module where it is defined, not the module from which it is called).
+   Return the dictionary implementing the current module namespace. For code within
+   functions, this is set when the function is defined and remains the same
+   regardless of where the function is called.
 
 
 .. function:: hasattr(object, name)

Misc/NEWS.d/next/Documentation/2021-11-28-22-43-21.bpo-19737.cOOubB.rst

@@ -0,0 +1 @@
+Update the documentation for the :func:`globals` function.