Update v2.7 Chinese translation

versioned_docs/version-2.6/getting-started/installation-and-upgrade/installation-requirements/port-requirements.md

@@ -298,36 +298,38 @@ SUSE Linux may have a firewall that blocks all ports by default. To open the por
 
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+
 1. SSH into the instance.
 1. Start YaST in text mode:
-```
-sudo yast2
-```
+    ```
+    sudo yast2
+    ```
 
 1. Navigate to **Security and Users** > **Firewall** > **Zones:public** > **Ports**. To navigate within the interface, follow the instructions [here](https://doc.opensuse.org/documentation/leap/reference/html/book.opensuse.reference/cha-yast-text.html#sec-yast-cli-navigate).
 1. To open the required ports, enter them into the **TCP Ports** and **UDP Ports** fields. In this example, ports 9796 and 10250 are also opened for monitoring. The resulting fields should look similar to the following:
-```yaml
-TCP Ports
-22, 80, 443, 2376, 2379, 2380, 6443, 9099, 9796, 10250, 10254, 30000-32767
-UDP Ports
-8472, 30000-32767
-```
+    ```yaml
+    TCP Ports
+    22, 80, 443, 2376, 2379, 2380, 6443, 9099, 9796, 10250, 10254, 30000-32767
+    UDP Ports
+    8472, 30000-32767
+    ```
 
 1. When all required ports are enter, select **Accept**.
 
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 <TabItem value="SLES 12 / openSUSE Leap 42">
+
 1. SSH into the instance.
 1. Edit /`etc/sysconfig/SuSEfirewall2` and open the required ports. In this example, ports 9796 and 10250 are also opened for monitoring:
-  ```
-  FW_SERVICES_EXT_TCP="22 80 443 2376 2379 2380 6443 9099 9796 10250 10254 30000:32767"
-  FW_SERVICES_EXT_UDP="8472 30000:32767"
-  FW_ROUTE=yes
-  ```
+    ```
+    FW_SERVICES_EXT_TCP="22 80 443 2376 2379 2380 6443 9099 9796 10250 10254 30000:32767"
+    FW_SERVICES_EXT_UDP="8472 30000:32767"
+    FW_ROUTE=yes
+    ```
 1. Restart the firewall with the new ports:
-  ```
-  SuSEfirewall2
-  ```
+    ```
+    SuSEfirewall2
+    ```
 
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