style(docs): Vertically align badge with code text in {tool} links

why: Badge sat slightly higher/lower than the adjacent code element
inside {tool} cross-reference links.
what:
- Add vertical-align: middle to both .sd-badge and code inside
  a.reference:has(.sd-badge)
- No inline-flex on the <a> — avoids inflating line box height

Author: tony

docs/_static/css/custom.css

@@ -332,6 +332,11 @@ code.docutils + .sd-badge,
 /* ── Link behavior: underline code only, on hover ───────── */
 a.reference .sd-badge {
   text-decoration: none;
+  vertical-align: middle;
+}
+
+a.reference:has(.sd-badge) code {
+  vertical-align: middle;
 }
 
 a.reference:has(.sd-badge) {