Correct javadoc issue

Author: gcatanese

src/main/java/com/adyen/Config.java

@@ -118,7 +118,7 @@ public Boolean getProtocolUpgradeEnabled() {
 
     /**
      * Whether the HTTP requests should automatically attempt to upgrade to a safer/newer version of the protocol.
-     * See also {@link RequestConfig.Builder#setProtocolUpgradeEnabled(boolean)}.
+     * See also AdyenHttpClient createRequest() method.
      */
     public void setProtocolUpgradeEnabled(Boolean protocolUpgradeEnabled) {
         this.protocolUpgradeEnabled = protocolUpgradeEnabled;