再次压缩图片，redbook的png格式换成了jpg

Author: mmmttt000045

public/Redbook.jpg

@@ -45,7 +45,7 @@ const descText = t('contact.desc').replace('{brand}', '<strong>RushDB</strong>')
           </div>
           <div class="contact-redbook">
             <div class="contact-redbook-title">{t('contact.redbookTitle')}</div>
-            <img src="/Redbook.png" alt="RushDB 官方小红书二维码" class="contact-redbook-img" loading="lazy" decoding="async" />
+            <img src="/Redbook.jpg" alt="RushDB 官方小红书二维码" class="contact-redbook-img" loading="lazy" decoding="async" />
             <div class="contact-redbook-hint">{t('contact.qrHint')}</div>
           </div>
         </div>