Update .github/SECURITY.md

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: aclark4life

.github/SECURITY.md

@@ -4,6 +4,6 @@ To report sensitive vulnerability information, report it [privately on GitHub](h
 
 The Pillow team will respond by following the steps in [Managing privately reported security vulnerabilities](https://docs.github.com/en/code-security/how-tos/report-and-fix-vulnerabilities/fix-reported-vulnerabilities/managing-privately-reported-security-vulnerabilities).
 
-If you cannot use GitHub, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
+If you cannot use GitHub, use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
 
-Please DO NOT report sensitive vulnerability information in public.
+DO NOT report sensitive vulnerability information in public.