fix: 백그라운드 이미지 수정

_site/feed.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="3.9.5">Jekyll</generator><link href="http://localhost:4000/feed.xml" rel="self" type="application/atom+xml" /><link href="http://localhost:4000/" rel="alternate" type="text/html" /><updated>2024-08-11T15:59:43+09:00</updated><id>http://localhost:4000/feed.xml</id><title type="html">Kang Byeong-hyeon 👨🏻‍💻</title><subtitle>Kang Byeonghyeon&apos;s dev blog
+<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="3.9.5">Jekyll</generator><link href="http://localhost:4000/feed.xml" rel="self" type="application/atom+xml" /><link href="http://localhost:4000/" rel="alternate" type="text/html" /><updated>2024-08-11T16:02:39+09:00</updated><id>http://localhost:4000/feed.xml</id><title type="html">Kang Byeong-hyeon 👨🏻‍💻</title><subtitle>Kang Byeonghyeon&apos;s dev blog
 </subtitle><author><name>Kang Byeonghyeon</name></author><entry><title type="html">[우선] 우선을 중단하며</title><link href="http://localhost:4000/%EC%9A%B0%EC%84%A0-%EC%9A%B0%EC%84%A0%EC%9D%84-%EC%A4%91%EB%8B%A8%ED%95%98%EB%A9%B0.html" rel="alternate" type="text/html" title="[우선] 우선을 중단하며" /><published>2024-07-28T00:00:00+09:00</published><updated>2024-07-28T00:00:00+09:00</updated><id>http://localhost:4000/%5B%EC%9A%B0%EC%84%A0%5D%20%EC%9A%B0%EC%84%A0%EC%9D%84%20%EC%A4%91%EB%8B%A8%ED%95%98%EB%A9%B0</id><content type="html" xml:base="http://localhost:4000/%EC%9A%B0%EC%84%A0-%EC%9A%B0%EC%84%A0%EC%9D%84-%EC%A4%91%EB%8B%A8%ED%95%98%EB%A9%B0.html">&lt;p&gt;&lt;br /&gt;
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