docs: add information gathering for softwareDesignTraining in the dashboard

Related OpenPathfinder/visionBoard#52

Author: UlisesGascon

docs/details/softwareDesignTraining.mdx

@@ -17,6 +17,10 @@ slug: /details/softwareDesignTraining
 At least One Primary Maintainer has taken TBD Training on Secure Software Design
 <!-- DESCRIPTION:END -->
 
+## Dashboard Inclusion
+
+It is considered `passed` if there is a record for the organization in the `software_design_training` dashboard table and the date falls within the valid range (one natural year). This table is maintained manually, [more information](https://github.com/secure-dashboards/openjs-foundation-dashboard/issues/52)
+
 <!-- DETAILS:START -->
 ## Details
 - Implementation Status: pending