v1.5 clarify resourceReferenceChoice.ref`

Signed-off-by: Jan Kowalleck <jan.kowalleck@gmail.com>

Author: jkowalleck

schema/bom-1.5.schema.json

@@ -3645,7 +3645,7 @@
         "ref": {
           "title": "BOM Reference",
           "description": "References an object by its bom-ref attribute",
-          "$ref": "#/definitions/refType"
+          "$ref": "#/definitions/refLinkType"
         },
         "externalReference": {
           "title": "External reference",

schema/bom-1.5.xsd

@@ -4356,7 +4356,7 @@ limitations under the License.
     <xs:complexType name="resourceReferenceType">
         <xs:sequence>
             <xs:choice>
-                <xs:element name="ref" type="bom:refType" minOccurs="1" maxOccurs="1">
+                <xs:element name="ref" type="bom:refLinkType" minOccurs="1" maxOccurs="1">
                     <xs:annotation>
                         <xs:documentation>
                             References an object by its bom-ref attribute