refactor: 将目录结构从 www 重命名为 nginx

- 将 default、git、note 目录下的 README.md 文件从 www目录移动到 nginx 目录
- 更新文件内容中的下载路径，从 www 改为 nginx- 修改 note 目录下的 deploy.sh 脚本执行路径

nginx/default/README.md

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+# default
+
+## Nginx 配置
+
+> 该配置需要在 `/etc/nginx/ssl/` 目录下创建 `fullchain.pem` 和 `privkey.pem` 证书文件。
+
+下载配置
+
+```bash
+curl -fsSL https://git.sugarscat.cn/me/bash/-/raw/main/nginx/default/nginx.conf > /etc/nginx/sites-available/default
+```
+
+启用配置
+
+```bash
+ln -s /etc/nginx/sites-available/default /etc/nginx/sites-enabled/default
+```
+
+测试配置
+
+```bash
+nginx -t
+```
+
+重启 nginx
+
+```bash
+systemctl restart nginx
+```

nginx/default/nginx.conf

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+##
+# You should look at the following URL's in order to grasp a solid understanding
+# of Nginx configuration files in order to fully unleash the power of Nginx.
+# https://www.nginx.com/resources/wiki/start/
+# https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
+# https://wiki.debian.org/Nginx/DirectoryStructure
+#
+# In most cases, administrators will remove this file from sites-enabled/ and
+# leave it as reference inside of sites-available where it will continue to be
+# updated by the nginx packaging team.
+#
+# This file will automatically load configuration files provided by other
+# applications, such as Drupal or Wordpress. These applications will be made
+# available underneath a path with that package name, such as /drupal8.
+#
+# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
+##
+
+# Default server configuration
+#
+server {
+    listen 80 default_server;
+    listen [::]:80 default_server;
+
+    # SSL configuration
+    #
+    listen 443 ssl default_server;
+    listen [::]:443 ssl default_server;
+
+    # ssl 设置
+    ssl_certificate /etc/nginx/ssl/fullchain.pem;
+    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
+
+    #
+    # Note: You should disable gzip for SSL traffic.
+    # See: https://bugs.debian.org/773332
+    #
+    # Read up on ssl_ciphers to ensure a secure configuration.
+    # See: https://bugs.debian.org/765782
+    #
+    # Self signed certs generated by the ssl-cert package
+    # Don't use them in a production server!
+    #
+    # include snippets/snakeoil.conf;
+
+    root /var/www/html;
+
+    # Add index.php to the list if you are using PHP
+    index index.html index.htm index.nginx-debian.html;
+
+    server_name _;
+
+    location / {
+        # First attempt to serve request as file, then
+        # as directory, then fall back to displaying a 404.
+        return 403;
+    }
+
+    # pass PHP scripts to FastCGI server
+    #
+    #location ~ \.php$ {
+    #	include snippets/fastcgi-php.conf;
+    #
+    #	# With php-fpm (or other unix sockets):
+    #	fastcgi_pass unix:/run/php/php7.4-fpm.sock;
+    #	# With php-cgi (or other tcp sockets):
+    #	fastcgi_pass 127.0.0.1:9000;
+    #}
+
+    # deny access to .htaccess files, if Apache's document root
+    # concurs with nginx's one
+    #
+    #location ~ /\.ht {
+    #	deny all;
+    #}
+}
+
+
+# Virtual Host configuration for example.com
+#
+# You can move that to a different file under sites-available/ and symlink that
+# to sites-enabled/ to enable it.
+#
+#server {
+#	listen 80;
+#	listen [::]:80;
+#
+#	server_name example.com;
+#
+#	root /var/www/example.com;
+#	index index.html;
+#
+#	location / {
+#		try_files $uri $uri/ =404;
+#	}
+#}