fix: use outputs- for all prefixes

Author: agoose77

packages/myst-transforms/src/blocks.spec.ts

@@ -139,8 +139,8 @@ describe('Test blockMetadataTransform', () => {
           },
           [
             u('outputs', { identifier: 'my_label-outputs' }, [
-              u('output', { identifier: 'my_label-output-0' }, 'We know what we are'),
-              u('output', { identifier: 'my_label-output-1' }, 'but know not what we may be.'),
+              u('output', { identifier: 'my_label-outputs-0' }, 'We know what we are'),
+              u('output', { identifier: 'my_label-outputs-1' }, 'but know not what we may be.'),
             ]),
           ],
         ),

packages/myst-transforms/src/blocks.ts

@@ -92,7 +92,8 @@ export function blockMetadataTransform(mdast: GenericParent, file: VFile) {
         const outputs = selectAll('output', outputsNode) as GenericNode[];
         outputs.forEach((outputNode, index) => {
           if (outputNode && !outputNode.identifier) {
-            outputNode.identifier = `${block.identifier}-output-${index}`;
+            // Label output node
+            outputNode.identifier = `${outputsNode.identifier}-${index}`;
           }
         });
       }