fix issue with narrative and explanation prompt not showing up in overview

app/src/content/assets/data/rephrasing_metadata.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:232a5ab20c1eb108a06dac83379c404a5ae0489831cc7fe7011edf4d3d237afb
-size 181172
+oid sha256:288f735a52e970cfe31860d6b4cda8dde031bff14a4d73e495d8e32ae5339777
+size 181012

app/src/content/embeds/experiment-overview.html

@@ -79,6 +79,8 @@
                     'format/commentary.md': { name: 'Commentary', cat: 'Format' },
                     'format/discussion.md': { name: 'Discussion', cat: 'Format' },
                     'format/article.md': { name: 'Article', cat: 'Format' },
+                    'format/narrative.md': { name: 'Narrative', cat: 'Format' },
+                    'format/explanation.md': { name: 'Explanation', cat: 'Format' },
                     'nemotron/diverse_qa_pairs.md': { name: 'Diverse QA', cat: 'Nemotron' },
                     'nemotron/knowledge_list.md': { name: 'Knowledge List', cat: 'Nemotron' },
                     'nemotron/wikipedia_style_rephrasing.md': { name: 'Wikipedia Style', cat: 'Nemotron' },