Update Misc/NEWS.d/next/Core and Builtins/2024-04-30-14-03-09.gh-issue-117151.yt2H8c.rst

Co-authored-by: Pieter Eendebak <[email protected]>

Author: morotti

Misc/NEWS.d/next/Core and Builtins/2024-04-30-14-03-09.gh-issue-117151.yt2H8c.rst

@@ -1,3 +1,3 @@
 increase io.DEFAULT_BUFFER_SIZE from 4k/8k to 128k. fix open on Linux to use
 ``max(io.DEFAULT_BUFFER_SIZE, device block size)`` rather than the device block
-size. improve I/O performance by 3 to 5 times. patch by Romain Morotti.
+size. Improve I/O performance upto 3 to 5 times. Patch by Romain Morotti.