[docs] update scopedStyleStragegy default and description (#8148)

packages/astro/src/@types/astro.ts

@@ -608,7 +608,7 @@ export interface AstroUserConfig {
 	 * @docs
 	 * @name scopedStyleStrategy
 	 * @type {('where' | 'class' | 'attribute')}
-	 * @default `'where'`
+	 * @default `'attribute'`
 	 * @version 2.4
 	 * @description
 	 *
@@ -619,7 +619,7 @@ export interface AstroUserConfig {
 	 *
 	 * Using `'class'` is helpful when you want to ensure that element selectors within an Astro component override global style defaults (e.g. from a global stylesheet).
 	 * Using `'where'` gives you more control over specifity, but requires that you use higher-specifity selectors, layers, and other tools to control which selectors are applied.
-	 * Using `'attribute'` is useful in case there's manipulation of the class attributes, so the styling emitted by Astro doesn't go in conflict with the user's business logic.
+	 * Using 'attribute' is useful when you are manipulating the `class` attribute of elements and need to avoid conflicts between your own styling logic and Astro's application of styles.
 	 */
 	scopedStyleStrategy?: 'where' | 'class' | 'attribute';