[site] link to action system
[site] link to action system

breandan/intellij-sdk-docs,JetBrains/intellij-sdk-docs,JetBrains/intellij-sdk-docs,breandan/intellij-sdk-docs,breandan/intellij-sdk-docs,chashnikov/intellij-sdk-docs,chashnikov/intellij-sdk-docs,JetBrains/intellij-sdk-docs,develar/intellij-sdk-docs,develar/intellij-sdk-docs,chashnikov/intellij-sdk-docs,artspb/intellij-sdk-docs,develar/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,chashnikov/intellij-sdk-docs,artspb/intellij-sdk-docs