Fix inline literal markup in the NEWS entry

Author: danilablagorodniy37

Misc/NEWS.d/next/Library/2026-10-10-22-14-22.gh-issue-150751.JInuGL.rst

@@ -1,4 +1,5 @@
 :mod:`http.client` now ignores optional whitespace around the
 ``Content-Length`` header value when validating it, as required by
-:rfc:`9112`. Previously a value such as ``Content-Length: 5 `` was treated as
-missing and the response body was read until the connection was closed.
+:rfc:`9112`. Previously a value with trailing whitespace (for example
+``Content-Length: 5`` followed by a space) was treated as missing and the
+response body was read until the connection was closed.