docs: correct withBase description to say it prepends the base (#5339)

docs/en/reference/runtime-api.md

@@ -140,7 +140,7 @@ For custom themes, the same router is available from [`enhanceApp`](../guide/cus
 
 - **Type**: `(path: string) => string`
 
-Appends the configured [`base`](./site-config#base) to a given URL path. Also see [Base URL](../guide/asset-handling#base-url).
+Prepends the configured [`base`](./site-config#base) to a given URL path. Also see [Base URL](../guide/asset-handling#base-url).
 
 ## `<Content />` <Badge type="info" text="component" />
 

src/client/app/utils.ts

@@ -18,7 +18,7 @@ export function joinPath(base: string, path: string) {
 }
 
 /**
- * Append base to internal (non-relative) urls
+ * Prepend base to internal (non-relative) urls
  */
 export function withBase(path: string) {
   return EXTERNAL_URL_RE.test(path) || !path.startsWith('/')