fix: use HTTPS for production repository fetches

docs/BAOTA_UBUNTU_FROM_ZERO.md

@@ -24,7 +24,7 @@ systemd: Gunicorn + UvicornWorker
 约定：
 
 - Ubuntu 22.04 或 24.04。
-- Gitea 仓库：`http://117.72.28.96:8765/Jacky/Hulumath-Web.git`。
+- Gitea 仓库：`https://git.jacky0987.xyz/Jacky/Hulumath-Web.git`。
 - 项目目录：`/www/wwwroot/Hulumath-Web`。
 - 应用监听：`127.0.0.1:8000`。
 - MySQL 8 宿主机端口：`3307`。
@@ -206,7 +206,7 @@ mysql -h 127.0.0.1 -P 3307 \
 
 ```bash
 git ls-remote \
-  http://117.72.28.96:8765/Jacky/Hulumath-Web.git \
+  https://git.jacky0987.xyz/Jacky/Hulumath-Web.git \
   refs/heads/main
 ```
 
@@ -223,7 +223,7 @@ if [ -d Hulumath-Web ]; then
 fi
 
 git clone \
-  http://117.72.28.96:8765/Jacky/Hulumath-Web.git \
+  https://git.jacky0987.xyz/Jacky/Hulumath-Web.git \
   Hulumath-Web
 cd Hulumath-Web
 git checkout main