fix: update wording in SECURITY.md for clarity

Author: Thavarshan

scripts/scaffold-php-package.sh

@@ -148,7 +148,7 @@ EOF
 cat > "${PKG_DIR}/SECURITY.md" << 'EOF'
 # Security Policy
 
-Report security issues privately to the maintainers. Do not open public issues for vulnerabilities.
+Report security issues protectedly to the maintainers. Do not open public issues for vulnerabilities.
 EOF
 
 cat > "${PKG_DIR}/CHANGELOG.md" << 'EOF'