Apply suggestions from code review

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

packages/astro/src/core/errors/errors-data.ts

@@ -794,11 +794,13 @@ export const InvalidDynamicRoute = {
 /**
  * @docs
  * @see
- * - [Images](https://docs.astro.build/en/guides/images/)
+ * - [Default Image Service](https://docs.astro.build/en/guides/images/#default-image-service)
+ * - [Image Component](https://docs.astro.build/en/guides/images/#image--astroassets)
+ * - [Image Services API](https://docs.astro.build/en/reference/image-service-reference/)
  * @description
- * When using a [strict package manager](https://pnpm.io/pnpm-vs-npm#npms-flat-tree) like pnpm, Sharp must be installed manually into your project in order to use image processing.
+ * Sharp is the default image service used for `astro:assets`. When using a [strict package manager](https://pnpm.io/pnpm-vs-npm#npms-flat-tree) like pnpm, Sharp must be installed manually into your project in order to use image processing.
  *
- * If you are not using image processing, you can use a passthrough image service that does no processing, like such:
+ * If you are not using `astro:assets` for image processing, and do not wish to install Sharp, you can configure the following passthrough image service that does no processing:
  *
  * ```js
  * import { defineConfig, passthroughImageService } from "astro/config";
@@ -813,7 +815,7 @@ export const MissingSharp = {
 	name: 'MissingSharp',
 	title: 'Could not find Sharp.',
 	message: 'Could not find Sharp. Please install Sharp (`sharp`) manually into your project.',
-	hint: "See Sharp's installation instructions for more information: https://sharp.pixelplumbing.com/install. If you are not using image processing, you may want to use the passthrough image service instead, see https://docs.astro.build/en/reference/errors/missing-sharp for more information.",
+	hint: "See Sharp's installation instructions for more information: https://sharp.pixelplumbing.com/install. If you are not relying on `astro:assets` to optimize, transform, or process any images, you can configure a passthrough image service instead of installing Sharp. See https://docs.astro.build/en/reference/errors/missing-sharp for more information.",
 };
 // No headings here, that way Vite errors are merged with Astro ones in the docs, which makes more sense to users.
 // Vite Errors - 4xxx