Fix spelling in Misc (GH-28858)

Author: 180909

Misc/HISTORY

@@ -1225,7 +1225,7 @@ Library
 - Issue #22396: On 32-bit AIX platform, don't expose os.posix_fadvise() nor
   os.posix_fallocate() because their prototypes in system headers are wrong.
 
-- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
+- Issue #22517: When an io.BufferedRWPair object is deallocated, clear its
   weakrefs.
 
 - Issue #22448: Improve canceled timer handles cleanup to prevent