fix(hana-cloud-ecn): repair malformed tags frontmatter list

tutorials/hana-cloud-ecn/hana-cloud-ecn.md

@@ -1,10 +1,10 @@
 ---
 parser: v2
 author_name: Dan van Leeuwen
 author_profile: https://github.com/danielva
 auto_validation: true
 time: 45
-tags: software-product>sap-hana-cloud, software-product>sap-hana-cloud, software-product-function>sap-hana-cloud--sap-hana-database,tutorial>license]
+tags: [tutorial>intermediate, software-product-function>sap-hana-cloud--sap-hana-database,tutorial>license]
 primary_tag: software-product>sap-hana-cloud
 ---
 
@@ -43,7 +43,7 @@
 
     ![Usage monitor](usage_monitor.png)
 
 2. The following examples are used for simulation purposes and can create a memory and CPU spike that will be moved to an ECN node.  They are intended to be run on a test or trial instance and not a production instance.  The size of the spike can be adjusted by increasing or decreasing the number of rows in the table. 
 
    ```SQL
    SELECT AVG(CPU) AS "CPU Usage %" FROM M_LOAD_HISTORY_HOST WHERE TIME > ADD_SECONDS(CURRENT_TIMESTAMP, -60);  --avg of the past 1 minute
@@ -134,7 +134,7 @@
 
         ![Add ECN](add-ecn.png)
 
     - An ECN can be created or deleted using a CLI. The BTP CLI is shown below but the CF CLI can also be used. 
 
         - Create a file named **ecn1.json** with the contents below which can be used to create an ECN.
 
@@ -649,7 +649,7 @@
 
     ![ECN verification 2](ecn_ex2.png)
 
     Notice that this time the table is also located on the ECN. 
 
 ### Remove the workload class and ECN
 
@@ -675,7 +675,7 @@
    btp.exe get services/instance <instance ID>
    ```
 
 ### Node.js app demonstrating prepared statements and the option routeDirectExecute on statement routing 
 
 The below Node.js app is used to demonstrate that statements must be prepared first to be routed to an ECN as documented at [Statement Routing](https://help.sap.com/docs/SAP_HANA_CLIENT/f1b440ded6144a54ada97ff95dac7adf/077d30cc847443288d3f0574356de4e7.html).
 
@@ -1581,11 +1581,11 @@
 
 - The timeframe duration must not exceed 24 hours
 
 - The timeframe cannot be less than 30 minutes. 
 
 - The timeframe must be within the last 14 days
 
 - The timeframe must be 20 minutes later than the current timestamp. 
 
 ### Knowledge check