Replace relative imports with util import alias

src/components/Card.astro

@@ -1,6 +1,6 @@
 ---
 import Datetime from "./Datetime.astro";
-import type { Frontmatter } from "src/utils/types";
+import type { Frontmatter } from "@utils/types";
 
 export interface Props {
   href?: string;

src/components/Datetime.astro

@@ -1,5 +1,5 @@
 ---
-import formatDatetime from "src/utils/formatDatetime";
+import formatDatetime from "@utils/formatDatetime";
 
 export interface Props {
   datetime: string;

src/components/Tag.astro

@@ -1,5 +1,5 @@
 ---
-import slugify from "src/utils/slugify";
+import slugify from "@utils/slugify";
 
 export interface Props {
   name: string;