feat(itam): Add markdown tag $software_version

ref: #690 closes #596

docs/projects/centurion_erp/user/core/markdown.md

@@ -97,7 +97,7 @@ A Model link is a reference to an item within the database. Supported model link
 | service| `$service-<id>` |
 | software| `$software-<id>` |
 | softwarecategory| `$-<id>` |
-| softwareversion| `$-<id>` |
+| softwareversion| `$software_version-<id>` |
 | team| `$team-<id>` |
 | ticketcategory| `$-<id>` |
 | ticketcomment| `$-<id>` |