Update badges to new branch main.

README.adoc

@@ -3,8 +3,8 @@
 
 = ECharts Jenkins Plugin
 
-image:https://ci.jenkins.io/job/Plugins/job/echarts-api-plugin/job/master/badge/icon?subject=Jenkins%20CI[Jenkins, link=https://ci.jenkins.io/job/Plugins/job/echarts-api-plugin/job/master/]
-image:https://github.com/jenkinsci/echarts-api-plugin/workflows/GitHub%20CI/badge.svg?branch=master[GitHub Actions, link=https://github.com/jenkinsci/echarts-api-plugin/actions]
+image:https://ci.jenkins.io/job/Plugins/job/echarts-api-plugin/job/main/badge/icon?subject=Jenkins%20CI[Jenkins, link=https://ci.jenkins.io/job/Plugins/job/echarts-api-plugin/job/main/]
+image:https://github.com/jenkinsci/echarts-api-plugin/workflows/GitHub%20CI/badge.svg?branch=main[GitHub Actions, link=https://github.com/jenkinsci/echarts-api-plugin/actions]
 
 Provides https://echarts.apache.org/en/index.html[ECharts] for Jenkins Plugins. ECharts is an open-sourced
 JavaScript visualization tool to create intuitive, interactive, and highly-customizable charts. It
@@ -44,7 +44,7 @@ have been recorded at the same day).
 - Support for pie and line charts (more to come soon).
 
 Those charts can be used as trend chart in the project page (see <<img-trend>>) or as information chart in the details
-view of a plugin (see <<reporter-detail>>).
+view of a plugin (see <<img-pie>>).
 
 [#pie-charts]
 === Pie charts