Apply suggestions from code review

Author: hauntsaninja

Lib/_pyio.py

@@ -1649,7 +1649,7 @@ def read(self, size=None):
         multiple read calls. See ``_io.FileIO.readall``.
 
         Attempts to make only one system call, retrying only per
-        PEP-475 (EINTR). This means less data may be returned than
+        PEP 475 (EINTR). This means less data may be returned than
         requested.
 
         In non-blocking mode, returns None if no data is available.

Modules/_io/fileio.c

@@ -854,7 +854,7 @@ Read at most size bytes, returned as bytes.
 If size is less than 0, read all bytes in the file making multiple read calls.
 See ``_io.FileIO.readall``.
 
-Attempts to make only one system call, retrying only per PEP-475 (EINTR). This
+Attempts to make only one system call, retrying only per PEP 475 (EINTR). This
 means less data may be returned than requested.
 
 In non-blocking mode, returns None if no data is available. Return an empty