Fix typo
diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 78c6d95..3fa9325 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -1460,7 +1460,7 @@
enabled. With this enabled, on input, the lines endings '\n', '\r',
or '\r\n' are translated to '\n' before being returned to the
caller. Conversely, on output, '\n' is translated to the system
- default line seperator, os.linesep. If newline is any other of its
+ default line separator, os.linesep. If newline is any other of its
legal values, that newline becomes the newline when the file is read
and it is returned untranslated. On output, '\n' is converted to the
newline.