update ui paths

Author: nickwesselman

sample-apps/delivery-customizations/extensions/delivery-customization-js/shopify.function.extension.toml

@@ -7,5 +7,5 @@ command = ""
 path = "dist/function.wasm"
 
 [ui.paths]
-create = "/"
-details = "/"
+create = "/delivery-customization/:functionId/new"
+details = "/delivery-customization/:functionId/:id"

sample-apps/discounts/extensions/product-discount-js/shopify.function.extension.toml

@@ -7,5 +7,5 @@ command = ""
 path = "dist/function.wasm"
 
 [ui.paths]
-create = "/"
-details = "/"
+create = "/volume/:functionId/new"
+details = "/volume/:functionId/:id"