chore(updater): readme

Signed-off-by: Me0wo <152751263+Sn0wo2@users.noreply.github.com>

Author: Sn0wo2

Updater/README.md

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+<h1 style="display: flex; align-items: center; gap: 10px;">
+  <img src="https://raw.githubusercontent.com/Sn0wo2/QuickNote/refs/heads/main/Frontend/public/quicknote.svg" alt="Logo" width="77">
+  <span><strong>QuickNote-Updater</strong></span>
+</h1>
+
+---
+
+> QuickNote Windows/Linux/MacOS Auto Updater!
+
+~~Docker support in progress?~~
+
+###### If you want hot updates, you need to install Caddy.
+
+###### It was developed to enable automatic updates for the [`QuickNote demo`](https://note.me0wo.top).