add quotation marks in the title and admin_user

[antonio24073]

Hi, please add quotation marks in the title and admin_user:

install: configure

configure:

	@echo "⚙️ Configuring Wordpress parameters..."
	wp core install \
		--url=${WORDPRESS_WEBSITE_URL_WITHOUT_HTTP} \
		--title="$(WORDPRESS_WEBSITE_TITLE)" \
		--admin_user="${WORDPRESS_ADMIN_USER}" \
		--admin_password=${WORDPRESS_ADMIN_PASSWORD} \
		--admin_email=${WORDPRESS_ADMIN_EMAIL}

	wp option update siteurl ${WORDPRESS_WEBSITE_URL}
	wp rewrite structure $(WORDPRESS_WEBSITE_POST_URL_STRUCTURE)