feat: Update Docker instructions

Author: ADubhlaoich

content/waf/install/docker.md

@@ -63,9 +63,9 @@ The steps you should follow on this page are dependent on your configuration typ
 
 ### Create configuration files
 
-Once you have downloaded your subscription files, place them in a folder.
+Copy or move your subscription files into a new folder.
 
-In the same folder, you create three files:
+In the same folder, create three files:
 
 - _nginx.conf_ - An NGINX configuration file with F5 WAF for NGINX enabled
 - _entrypoint.sh_ - A Docker startup script which spins up all F5 WA for NGINX processes, requiring executable permissions
@@ -174,7 +174,6 @@ This example uses NGINX Open Source as a base: it requires NGINX to be installed
 
 {{< /details >}}
 
-
 {{< call-out "note" >}}
 
 If you are not using using `custom_log_format.json` or the IP intelligence feature,  you should remove any references to them from your Dockerfile.