Flatten marketing paths ahead of wiring up the websites

Drop the redundant documentation/marketing/ nesting inherited from the
plugin repos, so files sit at marketing/<plugin>/<page>.md. These paths
become raw URLs pasted into Elementor pages and ACF fields, so they are
much cheaper to change now than once sites reference them.

Fixes the four cross-plugin links for their new depth, and corrects the
README, which still pointed at the abandoned per-repo documentation/
folders instead of this repo.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

marketing/dotjuice-elementor-tools/widgets/woo-page-numbers.md

@@ -0,0 +1,15 @@
+# Woo Page Numbers
+
+Fully styleable pagination for your shop and product archive pages.
+
+## The problem it solves
+
+WooCommerce's default "Previous / 1 2 3 / Next" pagination is functional but plain, and offers very little native styling control — especially for showing which page a shopper is currently on.
+
+## How it helps
+
+Woo Page Numbers wraps WooCommerce's pagination with dedicated styling controls: colours, borders, and spacing for the normal state, the hover state, and — separately — the currently active page, so it's always visually obvious where a shopper is in your catalogue.
+
+## The result
+
+Pagination that matches the rest of your store's design, without writing custom CSS to override WooCommerce's defaults.