Update index.html

Co-authored-by: Ted Thibodeau Jr <[email protected]>

index.html

@@ -831,13 +831,13 @@ <h3>JsonWebKey</h3>
                 </p>
                 <p>
 As specified in <a data-cite="RFC7517#section-4.4">Section 4.4 of the JWK specification</a>,
-the `alg` property identifies the algorithm intended for use with the public key, 
-and is included to prevent security issues that can arise when using the same
+the OPTIONAL `alg` property identifies the algorithm intended for use with the public key, 
+and SHOULD be included to prevent security issues that can arise when using the same
 key with multiple algorithms. As specified in <a data-cite="RFC7518#section-6.2.1.1">
 Section 6.2.1.1 of the JWA specification</a>, describing a key using an elliptic curve, 
-the `crv` property is used to identify the particular curve type of the public key. 
+the REQUIRED `crv` property is used to identify the particular curve type of the public key. 
 As specified in <a data-cite="RFC7515#section-4.1.4">Section 4.1.4 of the JWS specification</a>,
-the `kid` property is a hint used to help discover the key; if present, the `kid` value SHOULD
+the OPTIONAL `kid` property is a hint used to help discover the key; if present, the `kid` value SHOULD
 match, or be included in, the `id` property of the encapsulating `JsonWebKey` object,
 as part of the path, query, or fragment of the URL.
                 </p>