fix: add SITE.title in PostDetails title tag for consistent look (#247)

Add `SITE.title` in PostDetails page to be the same as other page title tags.

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Co-authored-by: satnaing <satnaingdev@gmail.com>

src/layouts/PostDetails.astro

@@ -7,6 +7,7 @@ import Datetime from "@components/Datetime";
 import type { CollectionEntry } from "astro:content";
 import { slugifyStr } from "@utils/slugify";
 import ShareLinks from "@components/ShareLinks.astro";
+import { SITE } from "@config";
 
 export interface Props {
   post: CollectionEntry<"blog">;
@@ -34,7 +35,7 @@ const ogUrl = new URL(
 ).href;
 
 const layoutProps = {
-  title,
+  title: `${title} | ${SITE.title}`,
   author,
   description,
   pubDatetime,