site: reframe post Mole callout as "❤️ 支持作者"

Was an ad-like "试试 Mole" CTA; quieter support wording, link to mole.fit unchanged. Shared constant also updates the RSS callout.

Author: tw93

src/supportCallout.ts

@@ -1,6 +1,6 @@
 export const SUPPORT_CALLOUT = {
-  zh: "试试我做的 Mac 清理工具 Mole",
-  en: "Try Mole, my Mac cleaner",
+  zh: "❤️ 支持作者",
+  en: "❤️ Support me",
   link: { zh: "https://mole.fit/zh", en: "https://mole.fit" },
 };