[3.12] Docs: document plistlib.InvalidFileException (GH-132069) (#132117)

Docs: document `plistlib.InvalidFileException` (GH-132069)
(cherry picked from commit 99e9798)

Co-authored-by: Yuki Kobayashi <[email protected]>

Author: miss-islington

Doc/library/plistlib.rst

@@ -74,8 +74,7 @@ This module defines the following functions:
    exceptions on ill-formed XML.  Unknown elements will simply be ignored
    by the plist parser.
 
-   The parser for the binary format raises :exc:`InvalidFileException`
-   when the file cannot be parsed.
+   The parser raises :exc:`InvalidFileException` when the file cannot be parsed.
 
    .. versionadded:: 3.4
 
@@ -154,6 +153,15 @@ The following constants are available:
    .. versionadded:: 3.4
 
 
+The module defines the following exceptions:
+
+.. exception:: InvalidFileException
+
+   Raised when a file cannot be parsed.
+
+   .. versionadded:: 3.4
+
+
 Examples
 --------