Update intellij_artifacts.md
Update intellij_artifacts.md

Get rid of references to bintray repository which is obsolete now, suggest to use intellij-dependencies repository instead.
artspb/intellij-sdk-docs,JetBrains/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,JetBrains/intellij-sdk-docs,artspb/intellij-sdk-docs,JetBrains/intellij-sdk-docs