Update heading and description for new chapter

ncoghlan · ncoghlan · commit 693a979aedf5 · 2024-10-31T16:33:24.000+10:00
diff --git a/Doc/library/cmdlinelibs.rst b/Doc/library/cmdlinelibs.rst
@@ -1,11 +1,13 @@
 .. _cmdlinelibs:
 
-**************************************
-Command Line Implementation Libraries
-**************************************
+********************************
+Command Line Interface Libraries
+********************************
 
 The modules described in this chapter provide interfaces that assist with
-implementing command line applications.  Here's an overview:
+implementing command line and terminal interfaces for applications.
+
+Here's an overview:
 
 .. toctree::
    :maxdepth: 1
