Update createNote.js

In line with b/411423334, replace references to storing vulnerabilities with storing attestations in the Artifact Analysis documentation, including code samples.

Author: lvoelz

container-analysis/snippets/createNote.js

@@ -44,19 +44,10 @@ async function main(
     parent: formattedParent,
     noteId: noteId,
     note: {
-      vulnerability: {
-        details: [
-          {
-            affectedCpeUri: 'foo.uri',
-            affectedPackage: 'foo',
-            affectedVersionStart: {
-              kind: 'MINIMUM',
-            },
-            affectedVersionEnd: {
-              kind: 'MAXIMUM',
-            },
-          },
-        ],
+      attestation: {
+        hint: {
+          humanReadableName: attestationAuthorityName,
+        },
       },
     },
   });