Update help links

ui/src/app/help/help-links.constant.js

@@ -75,7 +75,7 @@ export default angular.module('thingsboard.help', [])
                 ruleNodeRpcCallRequest: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/action-nodes/#rpc-call-request-node",
                 ruleNodeSaveAttributes: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/action-nodes/#save-attributes-node",
                 ruleNodeSaveTimeseries: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/action-nodes/#save-timeseries-node",
-                ruleNodeRuleChain: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/rule-chains/",
+                ruleNodeRuleChain: helpBaseUrl + "/docs/user-guide/ui/rule-chains/",
                 ruleNodeAwsSns: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/external-nodes/#aws-sns-node",
                 ruleNodeAwsSqs: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/external-nodes/#aws-sqs-node",
                 ruleNodeKafka: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/external-nodes/#kafka-node",
@@ -83,7 +83,7 @@ export default angular.module('thingsboard.help', [])
                 ruleNodeRabbitMq: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/external-nodes/#rabbitmq-node",
                 ruleNodeRestApiCall: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/external-nodes/#rest-api-call-node",
                 ruleNodeSendEmail: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/external-nodes/#send-email-node",
-                rulechains: helpBaseUrl + "/docs/user-guide/rule-engine-2-0/rule-chains/",
+                rulechains: helpBaseUrl + "/docs/user-guide/ui/rule-chains/",
                 tenants: helpBaseUrl + "/docs/user-guide/ui/tenants",
                 customers: helpBaseUrl + "/docs/user-guide/ui/customers",
                 assets: helpBaseUrl + "/docs/user-guide/ui/assets",