docs: add code block title

docs/en/latest/certificate.md

@@ -33,10 +33,9 @@ It is most common for an SSL certificate to contain only one domain. We can crea
 
 We will use the Python script below to simplify the example:
 
-```python
+```python title="create-ssl.py"
 #!/usr/bin/env python
 # coding: utf-8
-# save this file as create-ssl.py
 import sys
 # sudo pip install requests
 import requests
@@ -204,7 +203,7 @@ The following table details the configurations involved in this example and what
 
 1. Create CA bundle files
 
-```
+```shell
 cat /path/to/foo_ca.crt /path/to/bar_ca.crt > apisix.ca-bundle
 ```
 
@@ -227,7 +226,7 @@ goreman -f Procfile-single-enable-mtls start > goreman.log 2>&1 &
 
 3. Update `config.yaml`
 
-```yaml
+```yaml title="conf/config.yaml"
 deployment:
   admin:
     admin_key

docs/en/latest/mtls.md

@@ -35,7 +35,7 @@ The clients will provide their certificates to the server and the server will ch
 
 2. Modify configuration items in `conf/config.yaml`:
 
-```yaml
+```yaml title="conf/config.yaml"
   admin_listen:
     ip: 127.0.0.1
     port: 9180
@@ -70,7 +70,7 @@ curl --cacert /data/certs/mtls_ca.crt --key /data/certs/mtls_client.key --cert /
 
 You need to build [APISIX-Base](./FAQ.md#how-do-i-build-the-apisix-base-environment) and configure `etcd.tls` section if you want APISIX to work on an etcd cluster with mTLS enabled.
 
-```yaml
+```yaml title="conf/config.yaml"
 deployment:
   role: traditional
   role_traditional:
@@ -83,7 +83,7 @@ deployment:
 
 If APISIX does not trust the CA certificate that used by etcd server, we need to set up the CA certificate.
 
-```yaml
+```yaml title="conf/config.yaml"
 apisix:
   ssl:
     ssl_trusted_certificate: /path/to/certs/ca-certificates.crt       # path of CA certificate used by the etcd server
@@ -103,10 +103,9 @@ When configuring `ssl`, use parameter `client.ca` and `client.depth` to configur
 
 Here is an example Python script to create SSL with mTLS (id is `1`, changes admin API url if needed):
 
-```py
+```python title="create-ssl.py"
 #!/usr/bin/env python
 # coding: utf-8
-# save this file as create-ssl.py
 import sys
 # sudo pip install requests
 import requests
@@ -166,10 +165,9 @@ This feature requires APISIX to run on [APISIX-Base](./FAQ/#how-do-i-build-the-a
 
 Here is a similar Python script to patch a existed upstream with mTLS (changes admin API url if needed):
 
-```python
+```python title="patch_upstream_mtls.py"
 #!/usr/bin/env python
 # coding: utf-8
-# save this file as patch_upstream_mtls.py
 import sys
 # sudo pip install requests
 import requests

docs/zh/latest/certificate.md

@@ -35,10 +35,9 @@ SNI（Server Name Indication）是用来改善 SSL 和 TLS 的一项特性，它
 
 为了简化示例，我们会使用下面的 Python 脚本：
 
-```python
+```python title="create-ssl.py"
 #!/usr/bin/env python
 # coding: utf-8
-# save this file as create-ssl.py
 import sys
 # sudo pip install requests
 import requests
@@ -201,7 +200,7 @@ APISIX 目前支持在多处设置 CA 证书，比如 [保护 Admin API](./mtls.
 
 1. 制作 CA bundle 文件
 
-```
+```shell
 cat /path/to/foo_ca.crt /path/to/bar_ca.crt > apisix.ca-bundle
 ```
 
@@ -224,7 +223,7 @@ goreman -f Procfile-single-enable-mtls start > goreman.log 2>&1 &
 
 3. 更新 `config.yaml`
 
-```yaml
+```yaml title="conf/config.yaml"
 deployment:
   admin:
     admin_key

docs/zh/latest/mtls.md

@@ -35,7 +35,7 @@ title: TLS 双向认证
 
 2. 修改 `conf/config.yaml` 中的配置项：
 
-```yaml
+```yaml title="conf/config.yaml"
   admin_listen:
     ip: 127.0.0.1
     port: 9180
@@ -70,7 +70,7 @@ curl --cacert /data/certs/mtls_ca.crt --key /data/certs/mtls_client.key --cert /
 
 你需要构建 [APISIX-Base](./FAQ.md#如何构建-APISIX-Base-环境？)，并且需要在配置文件中设定 `etcd.tls` 来使 ETCD 的双向认证功能正常工作。
 
-```yaml
+```yaml title="conf/config.yaml"
 deployment:
   role: traditional
   role_traditional:
@@ -83,7 +83,7 @@ deployment:
 
 如果 APISIX 不信任 etcd server 使用的 CA 证书，我们需要设置 CA 证书。
 
-```yaml
+```yaml title="conf/config.yaml"
 apisix:
   ssl:
     ssl_trusted_certificate: /path/to/certs/ca-certificates.crt       # path of CA certificate used by the etcd server
@@ -103,10 +103,9 @@ apisix:
 
 下面是一个可用于生成带双向认证配置的 SSL 资源的 Python 脚本示例。如果需要，可修改 API 地址、API Key 和 SSL 资源的 ID。
 
-```py
+```python title="create-ssl.py"
 #!/usr/bin/env python
 # coding: utf-8
-# 保存该文件为 create-ssl.py
 import sys
 # sudo pip install requests
 import requests
@@ -166,10 +165,9 @@ curl --resolve 'mtls.test.com:<APISIX_HTTPS_PORT>:<APISIX_URL>' "https://<APISIX
 
 下面是一个与配置 SSL 时相似的 Python 脚本，可为一个已存在的 upstream 资源配置双向认证。如果需要，可修改 API 地址和 API Key。
 
-```python
+```python title="patch_upstream_mtls.py"
 #!/usr/bin/env python
 # coding: utf-8
-# 保存该文件为 patch_upstream_mtls.py
 import sys
 # sudo pip install requests
 import requests