Update verification version to 2.5.0; Add zh docs for 2.5.0 download (#41)

Update some information for releasing 2.5.0:

- Update verification version to 2.5.0
- Add Chinese docs for 2.5.0 download
diff --git a/_docs/en/downloads.md b/_docs/en/downloads.md
index 4ea0e83..435837c 100644
--- a/_docs/en/downloads.md
+++ b/_docs/en/downloads.md
@@ -5,11 +5,11 @@
 We recommend downloading the signed source release that follows [ASF Release Policy](http://www.apache.org/legal/release-policy.html): 
 > To verify the integrity of the release, check the following:
 > - Verify the checksum by downloading the `Package` and the `Checksum` file, and running the following command:
->   - On Linux: `sha512sum -c apache-pegasus-2.4.0-incubating-src.zip.sha512`
->   - On MacOS: `shasum -a 512 -c apache-pegasus-2.4.0-incubating-src.zip.sha512`
+>   - On Linux: `sha512sum -c apache-pegasus-2.5.0-incubating-src.zip.sha512`
+>   - On MacOS: `shasum -a 512 -c apache-pegasus-2.5.0-incubating-src.zip.sha512`
 > - Verify the signature by downloading the `Package` and the `Signature` file, and doing the following:
 >   - Import the [KEYS file](https://downloads.apache.org/incubator/pegasus/KEYS) to the GPG keychain by running `gpg --import KEYS`
->   - Run `gpg --verify apache-pegasus-2.4.0-incubating-src.zip.asc apache-pegasus-2.4.0-incubating-src.zip`
+>   - Run `gpg --verify apache-pegasus-2.5.0-incubating-src.zip.asc apache-pegasus-2.5.0-incubating-src.zip`
 
 [2.1.0-src]: https://www.apache.org/dyn/closer.lua?path=/incubator/pegasus/2.1.0/apache-pegasus-2.1.0-incubating-src.zip
 [2.1.0-asc]: https://downloads.apache.org/incubator/pegasus/2.1.0/apache-pegasus-2.1.0-incubating-src.zip.asc
diff --git a/_docs/zh/downloads.md b/_docs/zh/downloads.md
index af6c1c9..ecbd4a4 100644
--- a/_docs/zh/downloads.md
+++ b/_docs/zh/downloads.md
@@ -1,15 +1,15 @@
 ---
-permalink: docs/downloads/
+permalink: zh/docs/downloads/
 ---
 
 我们推荐下载遵循[ASF Release Policy](http://www.apache.org/legal/release-policy.html)发布的源码包:
 > 执行以下操作来验证release包的正确性:
 > - 下载`Package`包和`Checksum`文件来验证checksum,执行以下命令:
->   - Linux: `sha512sum -c apache-pegasus-2.4.0-incubating-src.zip.sha512`
->   - MacOS: `shasum -a 512 -c apache-pegasus-2.4.0-incubating-src.zip.sha512`
+>   - Linux: `sha512sum -c apache-pegasus-2.5.0-incubating-src.zip.sha512`
+>   - MacOS: `shasum -a 512 -c apache-pegasus-2.5.0-incubating-src.zip.sha512`
 > - 下载`Package`包和`Signature`文件来验证签名,执行以下命令:
 >   - 导入[KEYS文件](https://downloads.apache.org/incubator/pegasus/KEYS) 到GPG keychain:`gpg --import KEYS`
->   - 执行命令 `gpg --verify apache-pegasus-2.4.0-incubating-src.zip.asc apache-pegasus-2.4.0-incubating-src.zip`
+>   - 执行命令 `gpg --verify apache-pegasus-2.5.0-incubating-src.zip.asc apache-pegasus-2.5.0-incubating-src.zip`
 
 [2.1.0-src]: https://www.apache.org/dyn/closer.lua?path=/incubator/pegasus/2.1.0/apache-pegasus-2.1.0-incubating-src.zip
 [2.1.0-asc]: https://downloads.apache.org/incubator/pegasus/2.1.0/apache-pegasus-2.1.0-incubating-src.zip.asc
@@ -27,6 +27,10 @@
 [2.4.0-asc]: https://downloads.apache.org/incubator/pegasus/2.4.0/apache-pegasus-2.4.0-incubating-src.zip.asc
 [2.4.0-sha]: https://downloads.apache.org/incubator/pegasus/2.4.0/apache-pegasus-2.4.0-incubating-src.zip.sha512
 [2.4.0-rn]: https://cwiki.apache.org/confluence/display/PEGASUS/Apache+Pegasus+2.4.0+Release+Notes
+[2.5.0-src]: https://www.apache.org/dyn/closer.lua?path=/incubator/pegasus/2.5.0/apache-pegasus-2.5.0-incubating-src.zip
+[2.5.0-asc]: https://downloads.apache.org/incubator/pegasus/2.5.0/apache-pegasus-2.5.0-incubating-src.zip.asc
+[2.5.0-sha]: https://downloads.apache.org/incubator/pegasus/2.5.0/apache-pegasus-2.5.0-incubating-src.zip.sha512
+[2.5.0-rn]: https://cwiki.apache.org/confluence/display/PEGASUS/Apache+Pegasus+2.5.0+Release+Notes
 
 | Name                 | Package             | Signature        | Checksum            | Release Notes          |
 |----------------------|---------------------|------------------|---------------------|------------------------|
@@ -34,6 +38,7 @@
 | Apache Pegasus 2.2.0 | [Source][2.2.0-src] | [asc][2.2.0-asc] | [sha512][2.2.0-sha] | [2021-06-27][2.2.0-rn] |
 | Apache Pegasus 2.3.0 | [Source][2.3.0-src] | [asc][2.3.0-asc] | [sha512][2.3.0-sha] | [2021-11-26][2.3.0-rn] |
 | Apache Pegasus 2.4.0 | [Source][2.4.0-src] | [asc][2.4.0-asc] | [sha512][2.4.0-sha] | [2022-10-22][2.4.0-rn] |
+| Apache Pegasus 2.5.0 | [Source][2.5.0-src] | [asc][2.5.0-asc] | [sha512][2.5.0-sha] | [2022-12-01][2.5.0-rn] |
 
 在 2.1.0 版本以前,Pegasus 并未遵循 ASF 发版流程,这里我们仍然提供老版本下载渠道,方便升级: