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/screenshot-capture.md

@@ -0,0 +1,17 @@
+# Screenshot Capture
+
+A live, always-current screenshot of any website — dropped onto your page like a normal image, with full styling control.
+
+## The problem it solves
+
+Showcasing another website — a client's project, a partner site, a "before" example — usually means manually taking a screenshot, uploading it, and remembering to update it whenever the target page changes. It's tedious, and the image goes stale the moment the source page is updated.
+
+## How it helps
+
+Screenshot Capture fetches a real screenshot of any URL you give it, on desktop, tablet, or phone dimensions, full-page or single-viewport, and displays it exactly like an image widget — with the same transform, hover, box-shadow, and filter controls you'd expect from a premium Elementor widget. Screenshots are cached automatically, so your page stays fast, and a one-click refresh in the editor lets you pull a fresh capture whenever you need one.
+
+## The result
+
+A portfolio, case study, or partner showcase page that always shows a real, current view of the site it's linking to — without a manual screenshot workflow.
+
+*Free version screenshots include a small watermark. [Dotjuice Elementor Tools Pro](../../dotjuice-elementor-tools-pro/overview.md) removes it.*