style(simple-jwt): Upgraded method to get Algorithm declared in third-party implementation.

simple-jwt-authzero/src/main/java/cn/org/codecrafters/simplejwt/authzero/AuthzeroTokenResolver.java

@@ -140,7 +140,7 @@ public class AuthzeroTokenResolver implements TokenResolver<DecodedJWT> {
             throw new IllegalArgumentException("A secret is required to build a JSON Web Token.");
         }
         this.jtiCreator = jtiCreator;
-        this.algorithm = AuthzeroTokenResolverConfig.getInstance().getFunction(algorithm).apply(secret);
+        this.algorithm = AuthzeroTokenResolverConfig.getInstance().getAlgorithm(algorithm).apply(secret);
         this.issuer = issuer;
         this.verifier = JWT.require(this.algorithm).build();
     }

simple-jwt-authzero/src/main/java/cn/org/codecrafters/simplejwt/authzero/config/AuthzeroTokenResolverConfig.java

@@ -140,7 +140,7 @@ public final class AuthzeroTokenResolverConfig implements TokenResolverConfig<Fu
      *                                       implementation
      */
     @Override
-    public Function<String, Algorithm> getFunction(TokenAlgorithm algorithm) {
+    public Function<String, Algorithm> getAlgorithm(TokenAlgorithm algorithm) {
         return Optional.of(SUPPORTED_ALGORITHMS).map((entry) -> entry.get(algorithm))
                 .orElseThrow(() -> new UnsupportedAlgorithmException("The specified algorithm is not supported yet."));
     }