docs: point the theme folder references at Jio, not Jio-theme

The mechanical rename turned AKSRT-theme into Jio-theme, but the
directory itself is Jio. Fix the three places that name the folder
(README install steps and tree, wp-cli-visual-fixtures usage comment,
DocsPage docs deep-link) and rebuild the SPA bundle.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tools/wp-cli-visual-fixtures.php

@@ -3,8 +3,8 @@
  * Reversible WP-CLI visual fixtures for Jio/Zibll comparison.
  *
  * Usage:
- *   wp eval-file wp-content/themes/Jio-theme/tools/wp-cli-visual-fixtures.php create
- *   wp eval-file wp-content/themes/Jio-theme/tools/wp-cli-visual-fixtures.php cleanup
+ *   wp eval-file wp-content/themes/Jio/tools/wp-cli-visual-fixtures.php create
+ *   wp eval-file wp-content/themes/Jio/tools/wp-cli-visual-fixtures.php cleanup
  *
  * @package Jio
  */