Update swift/ql/src/queries/Security/CWE-757/InsecureTLS.qhelp

Co-authored-by: hubwriter <hubwriter@github.com>

Author: AlexDenisov

swift/ql/src/queries/Security/CWE-757/InsecureTLS.qhelp

@@ -12,7 +12,7 @@
 </recommendation>
 <example>
 
-<p>Specify newer <code>tls_protocol_version_t</code> explicitly, or omit it completely as the OS will use secure defaults.</p>
+<p>Specify a newer <code>tls_protocol_version_t</code> explicitly, or omit it completely as the OS will use secure defaults.</p>
 
 <sample src="SecureTLS.swift" />