Add a note for pkg_version in plan_settings.md
@@ -101,7 +101,7 @@ pkg_version
{{< /foundation_tabs_panels >}}
{{< note >}}
-Habitat uses the guidelines of the semantic versioning specification to determine version order. Keep in mind that including a hyphen in your version indicates that the package is a pre-release that will be given lower precedence to other versions.
+Habitat uses the guidelines of the semantic versioning specification to determine version order (see https://semver.org/). Keep in mind that including a hyphen in your version indicates that the package is a pre-release that will be given lower precedence to other versions.
{{< /note >}}
pkg_maintainer
