Add Passkeys webauthn in example

Signed-off-by: Tran Ngoc Nhan <ngocnhan.tran1996@gmail.com>

docs/modules/ROOT/pages/servlet/authentication/passkeys.adoc

@@ -26,7 +26,7 @@ Maven::
 ----
 <dependency>
     <groupId>org.springframework.security</groupId>
-    <artifactId>spring-security-web</artifactId>
+    <artifactId>spring-security-webauthn</artifactId>
 </dependency>
 <dependency>
     <groupId>com.webauthn4j</groupId>
@@ -40,7 +40,7 @@ Gradle::
 [source,groovy,role="secondary",subs="verbatim,attributes"]
 ----
 dependencies {
-    implementation "org.springframework.security:spring-security-web"
+    implementation "org.springframework.security:spring-security-webauthn"
     implementation "com.webauthn4j:webauthn4j-core:{webauthn4j-core-version}"
 }
 ----