fix: the docs lint errors (#481)

.github/workflows/docs.yaml

@@ -8,7 +8,7 @@ on:
     - 'tools/make/docs.mk'
   pull_request:
     branches:
-    - "main"
+    - "master"
     paths:
     - 'docs/site/**'
     - 'tools/make/docs.mk'

docs/site/content/en/latest/tasks/prometheus.md

@@ -13,6 +13,7 @@ It will push the test results data into Prometheus [PushGateway](https://github.
 Then Prometheus could get the metrics from it.
 
 Skip the following instructions if you are familiar with Prometheus:
+
 ```shell
 docker run \
     -p 9090:9090 \

docs/site/content/en/news/releases/_index.md

@@ -8,7 +8,7 @@ type = "docs"
 +++
 
 This document provides details on API Testing releases.
-API Testing follows the Semantic Version Control [v2.0.0 specification][] for release version control.
+API Testing follows the Semantic Version Control [v2.0.0 specification](https://semver.org/) for release version control.
 Since API Testing is a new project, minor versions are the only versions defined.
 Additional release details, such as patch versions, will be created by API Testing maintainers at a future date.
 

docs/site/content/zh/news/releases/_index.md

@@ -8,7 +8,7 @@ type = "docs"
 +++
 
 本文档提供了 API Testing 版本的详细信息。
-API Testing 遵循语义版本控制 [v2.0.0 规范][]进行发布版本控制。
+API Testing 遵循语义版本控制 [v2.0.0 规范](https://semver.org/)进行发布版本控制。
 由于 API Testing 是一个新项目，因此次要版本是唯一被定义的版本。
 API Testing 维护人员在未来的某个日期将建立额外的发布详细信息，例如补丁版本。