fix(dashboard): escape author field in revision table (#1001)

## Summary
- wraps the `author` column in `dashboard revisions` with
`escapeMarkdownCell()` to prevent markdown table breakage when a user's
name or email contains `|`
- missed in #1000 — caught by sentry[bot]'s automated review

One-line change, no new dependencies.

Author: MathurAditya724

src/commands/dashboard/revisions.ts

@@ -72,7 +72,9 @@ function formatRevisionsHuman(result: RevisionsResult): string {
   const rows: RevisionRow[] = result.revisions.map((r) => ({
     id: r.id,
     title: escapeMarkdownCell(r.title),
-    author: r.createdBy?.name ?? r.createdBy?.email ?? r.createdBy?.id ?? "—",
+    author: escapeMarkdownCell(
+      r.createdBy?.name ?? r.createdBy?.email ?? r.createdBy?.id ?? "—"
+    ),
     created: `${escapeMarkdownCell(formatRelativeTime(r.dateCreated))}\n${colorTag("muted", r.dateCreated)}`,
   }));