style: reword slide 5 as bullet points

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

index.html

@@ -174,7 +174,11 @@
   <!-- ─── SLIDE 5 ─────────────────────────────────────────────────── -->
   <section>
     <h2>You have 10 servers.</h2>
-    <p><em>Still manageable… but every small change means 10 SSH sessions, 10 vim edits, 10 chances to make a mistake.</em></p>
+    <ul>
+      <li>10 SSH sessions</li>
+      <li>10 manual edits</li>
+      <li>10 chances to make a mistake</li>
+    </ul>
     <!-- SVG2 — laptop + 10 servers fan-out -->
     <svg width="720" height="260" viewBox="0 0 720 260" style="margin-top:0.5em;" xmlns="http://www.w3.org/2000/svg">
       <!-- Laptop body -->