PEP 680: Further explain why files are read as binary (GH-2281)

Author: hauntsaninja

pep-0680.rst

@@ -289,8 +289,9 @@ be worked around in user code, or by using a third-party library.
 
 The proposed API takes a binary file, while ``toml.load`` takes a text file and
 ``json.load`` takes either. Using a binary file allows us to ensure UTF-8 is
-the encoding used, and avoid incorrectly parsing single carriage returns as
-valid TOML due to universal newlines in text mode.
+the encoding used (ensuring correct parsing on platforms with other default
+encodings, such as Windows), and avoid incorrectly parsing files containing
+single carriage returns as valid TOML due to universal newlines in text mode.
 
 
 Type accepted as the first argument of ``tomllib.loads``