test(markdown): expect medium width for new images

tests/content-markdown.test.ts

@@ -83,7 +83,7 @@ const answer = 42;
 
     const doc = markdownToDoc(markdown);
     expect(doc.content.map((node) => node.type)).toEqual(["codeBlock", "image"]);
-    expect(doc.content[1]?.attrs?.width).toBe(35);
+    expect(doc.content[1]?.attrs?.width).toBe(50);
     expect(docToMarkdown(doc)).toBe(markdown);
   });