fix: missing space in nap dos ubuntu docker template (#458)

Co-authored-by: Alan Dooley <[email protected]>

Author: 2 people

content/nap-dos/deployment-guide/learn-about-deployment.md

@@ -1707,7 +1707,7 @@ RUN apt-get update && apt-get install -y apt-transport-https lsb-release ca-cert
 RUN wget -qO - https://cs.nginx.com/static/keys/nginx_signing.key | gpg --dearmor | tee /usr/share/keyrings/nginx-archive-keyring.gpg >/dev/null
 
 # Add NGINX Plus and NGINX App Protect DoS repository:
-RUN printf "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg]https://pkgs.nginx.com/plus/ubuntu `lsb_release -cs` nginx-plus\n" | tee /etc/apt/sources.list.d/nginx-plus.list
+RUN printf "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] https://pkgs.nginx.com/plus/ubuntu `lsb_release -cs` nginx-plus\n" | tee /etc/apt/sources.list.d/nginx-plus.list
 RUN printf "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] https://pkgs.nginx.com/app-protect-dos/ubuntu `lsb_release -cs` nginx-plus\n" | tee /etc/apt/sources.list.d/nginx-app-protect-dos.list
 
 # Download the apt configuration to `/etc/apt/apt.conf.d`: