Fix paths in config install instructions

Set /var/www/html to /var/www in config copy statement.

Install/kanboard-install

@@ -9,8 +9,8 @@ set version '1.2.11'
 
 ## PostgreSQL setup
 sudo -u postgres psql -f Templates/postgres_kanboard.sql
-sudo mkdir -p "/var/www/html/kanboard-$version"
-sudo cp Templates/config.php "/var/www/html/kanboard-$version/"
+sudo mkdir -p "/var/www/kanboard-$version"
+sudo cp Templates/config.php "/var/www/kanboard-$version/"
 
 ## Install PHP
 sudo apt install -y apache2 libapache2-mod-php php-cli php-mbstring  \