Sentence case headings

Author: hugovk

Doc/library/zipfile.rst

@@ -175,7 +175,7 @@ The module defines the following items:
 
 .. _zipfile-objects:
 
-ZipFile Objects
+ZipFile objects
 ---------------
 
 
@@ -571,7 +571,7 @@ The following data attributes are also available:
 
 .. _path-objects:
 
-Path Objects
+Path objects
 ------------
 
 .. class:: Path(root, at='')
@@ -707,7 +707,7 @@ changes.
 
 .. _pyzipfile-objects:
 
-PyZipFile Objects
+PyZipFile objects
 -----------------
 
 The :class:`PyZipFile` constructor takes the same parameters as the
@@ -784,7 +784,7 @@ The :class:`PyZipFile` constructor takes the same parameters as the
 
 .. _zipinfo-objects:
 
-ZipInfo Objects
+ZipInfo objects
 ---------------
 
 Instances of the :class:`ZipInfo` class are returned by the :meth:`.getinfo` and
@@ -954,7 +954,7 @@ Instances have the following methods and attributes:
 .. _zipfile-commandline:
 .. program:: zipfile
 
-Command-Line Interface
+Command-line interface
 ----------------------
 
 The :mod:`zipfile` module provides a simple command-line interface to interact
@@ -1029,7 +1029,7 @@ From file itself
 Decompression may fail due to incorrect password / CRC checksum / ZIP format or
 unsupported compression method / decryption.
 
-File System limitations
+File system limitations
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 Exceeding limitations on different file systems can cause decompression failed.