Update ascii diagram in pitr README.md

apache · Sep 24, 2023 · 69d74a1 · 69d74a1
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diff --git a/pitr/README.md b/pitr/README.md
@@ -6,13 +6,15 @@ This is a cli tool for point-in-time recovery of Apache ShardingSphere and OpenG
 
 Before you start, you need to prepare at least three servers, set the running environment and deploy required softwares respectively. The topology is:
 
+```shell
 +------------------------------+             +------------------+
 |                              |             | OpenGauss Server |
 | Apache ShardingSphere Proxy  |             | Pitr Agent       |
 | Apache Zookeeper             | ----------> +------------------+
 | Pitr Cli (aka `gs_pitr`)     |             | OpenGauss Server |
 |                              |             | Pitr Agent       |
 +------------------------------+             +------------------+
+```
 
 ### Servers