update download URL from pingcap.org to pingcap.com (#3039) (#3063)

Author: ti-chi-bot

en/pd-recover.md

@@ -15,7 +15,7 @@ PD Recover is a disaster recovery tool of [PD](https://docs.pingcap.com/tidb/sta
     {{< copyable "shell-regular" >}}
 
     ```shell
-    wget https://download.pingcap.org/tidb-community-toolkit-${version}-linux-amd64.tar.gz
+    wget https://download.pingcap.com/tidb-community-toolkit-${version}-linux-amd64.tar.gz
     ```
 
     In the command above, `${version}` is the version of the TiDB cluster, such as `{{{ .tidb_version }}}`.

zh/pd-recover.md

@@ -15,7 +15,7 @@ PD Recover 是对 PD 进行灾难性恢复的工具，用于恢复无法正常
     {{< copyable "shell-regular" >}}
 
     ```shell
-    wget https://download.pingcap.org/tidb-community-toolkit-${version}-linux-amd64.tar.gz
+    wget https://download.pingcap.com/tidb-community-toolkit-${version}-linux-amd64.tar.gz
     ```
 
     `${version}` 是 TiDB 集群版本，例如，`{{{ .tidb_version }}}`。