Fix Catalyst+Buyer Portal link on BP overview page (#1207)

Fixes a broken link on the Buyer Portal overview page

Author: CNanninga

docs/b2b-edition/docs/buyer-portal/overview.mdx

@@ -15,7 +15,7 @@ Whether you use BigCommerce’s Stencil theme engine, the Catalyst storefront ex
 ## Supported storefront models
 - **Stencil:** Embed and control the Buyer Portal via header/footer scripts and theme hooks. See the [Stencil guide](/b2b-edition/docs/buyer-portal/stencil).
 - **Headless (self-hosted):** Run and deploy the open-source Buyer Portal next to your headless storefront. See the [Headless guide](/b2b-edition/docs/buyer-portal//headless).
-- **Catalyst:** Render the Buyer Portal on top of Catalyst and wire authentication. See the [Catalyst guide](/storefront/catalyst/experiments/buyer-portal).
+- **Catalyst:** Render the Buyer Portal on top of Catalyst and wire authentication. See the [Catalyst guide](/docs/storefront/catalyst/experiments/b2b).
 
 ## Prerequisites