Links in documentation to ESCET website documentation should point to specific versions
For instance, the [v0.6-RC1 project release notes page](https://www.eclipse.org/escet/v0.6-RC1/release-notes.html) should point to the CIF/Chi/ToolDef release notes page of that version, not the currently most recent one. We should use variables that are automatically replaced during the Maven build.
issue