docs: Fix broken link in README plugins (#2265)

packages/admin-ui-plugin/README.md

@@ -2,4 +2,4 @@
 
 `npm install @vendure/admin-ui-plugin`
 
-For documentation, see [www.vendure.io/docs/typescript-api/admin-ui-plugin/](https://www.vendure.io/docs/typescript-api/admin-ui-plugin/)
+For documentation, see [docs.vendure.io/typescript-api/core-plugins/admin-ui-plugin/](https://docs.vendure.io/typescript-api/core-plugins/admin-ui-plugin/)

packages/asset-server-plugin/README.md

@@ -4,4 +4,4 @@ The `AssetServerPlugin` serves assets (images and other files) from the local fi
 
 `npm install @vendure/asset-server-plugin`
 
-For documentation, see [www.vendure.io/docs/typescript-api/asset-server-plugin](https://www.vendure.io/docs/typescript-api/asset-server-plugin/)
+For documentation, see [docs.vendure.io/typescript-api/core-plugins/asset-server-plugin/](https://docs.vendure.io/typescript-api/core-plugins/asset-server-plugin/)

packages/elasticsearch-plugin/README.md

@@ -6,4 +6,4 @@ The `ElasticsearchPlugin` uses Elasticsearch to power the Vendure product search
 
 `npm install @vendure/elasticsearch-plugin`
 
-For documentation, see [www.vendure.io/docs/typescript-api/elasticsearch-plugin/](https://www.vendure.io/docs/typescript-api/elasticsearch-plugin/)
+For documentation, see [docs.vendure.io/typescript-api/core-plugins/elasticsearch-plugin/](https://docs.vendure.io/typescript-api/core-plugins/elasticsearch-plugin/)

packages/email-plugin/README.md

@@ -4,4 +4,4 @@ The `EmailPlugin` generates and sends emails based on Vendure server events.
 
 `npm install @vendure/email-plugin`
 
-For documentation, see [www.vendure.io/docs/typescript-api/email-plugin/](https://www.vendure.io/docs/typescript-api/email-plugin/)
+For documentation, see [docs.vendure.io/typescript-api/core-plugins/email-plugin/](https://docs.vendure.io/typescript-api/core-plugins/email-plugin/)

packages/harden-plugin/README.md

@@ -4,4 +4,4 @@ Hardens your Vendure GraphQL APIs against attacks.
 
 `npm install @vendure/harden-plugin`
 
-For documentation, see [www.vendure.io/docs/typescript-api/harden-plugin/](https://www.vendure.io/docs/typescript-api/harden-plugin/)
+For documentation, see [docs.vendure.io/typescript-api/core-plugins/harden-plugin/](https://docs.vendure.io/typescript-api/core-plugins/harden-plugin/)

packages/payments-plugin/README.md

@@ -1,6 +1,6 @@
 # Payments plugin
 
-For documentation, see https://www.vendure.io/docs/typescript-api/payments-plugin
+For documentation, see [docs.vendure.io/typescript-api/core-plugins/payments-plugin/](https://docs.vendure.io/typescript-api/core-plugins/payments-plugin/)
 
 ## Development