bpo-39654: Update pyclbr doc to reflect additional information returned (GH-18528)

Full nested function and class info makes it a module browser.

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Author: 3 people

Doc/library/pyclbr.rst

@@ -1,8 +1,8 @@
-:mod:`pyclbr` --- Python class browser support
-==============================================
+:mod:`pyclbr` --- Python module browser support
+===============================================
 
 .. module:: pyclbr
-   :synopsis: Supports information extraction for a Python class browser.
+   :synopsis: Supports information extraction for a Python module browser.
 
 .. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
 
@@ -29,6 +29,9 @@ modules.
    *path* is a sequence of directory paths prepended to ``sys.path``,
    which is used to locate the module source code.
 
+   This function is the original interface and is only kept for back
+   compatibility.  It returns a filtered version of the following.
+
 
 .. function:: readmodule_ex(module, path=None)
 

Misc/NEWS.d/next/Documentation/2020-02-18-07-42-20.bpo-39654.MoT1jI.rst

@@ -0,0 +1,2 @@
+In pyclbr doc, update 'class' to 'module' where appropriate and add readmodule comment.
+Patch by Hakan Çelik.