[windup-dev] Docs for duplicated archives handling

Hi Andrea, there's a new feature - dupl archives handling. Story 120 in Taiga https://tree.taiga.io/project/rdruss-jboss-migration-windup-v3/us/120 PR: https://github.com/windup/windup/pull/936 There's no Jira so I am not sure where to put the documentation notes, so at least letting you know this way. It will need a note in the Report Index description like this: For non-source mode (when scanning an app archives), the aggregated issue counts and story points in tables and charts are taking duplicated sub-archives into account, so that an application module which appears in multiple applications or more than once in one application is only counted once into the migration effort. Ondra