Improve more info update release note display (#22502)

* Fix ha-settings-row

* Improve update more info and update available card

* Set actions at the bottom on mobile

* Use update instead of install

* Improve markdown loaded

src/components/ha-markdown.ts

@@ -86,6 +86,11 @@ export class HaMarkdown extends LitElement {
         font-size: 1.5em;
         font-weight: bold;
       }
+      hr {
+        border-color: var(--divider-color);
+        border-bottom: none;
+        margin: 16px 0;
+      }
     `;
   }
 }