Fix Done! spacing site-wide, and EN-only content errors (Docker/Linux mixup, missing spaces, ProloNAS pun explanation)

content/en/3.serveex/7.files/1.file-browser-quantum.md

@@ -96,7 +96,7 @@ Mount every folder you listed under `sources` in `config.yaml` at the same path
 
 Deploy the container and go to `http://yourserverip:8020`. Log in with the default `admin` / `admin` credentials, then immediately change the password in your profile settings.
 
-### Done !
+### Done!
 ::
 
 ::caution
@@ -205,7 +205,7 @@ server {
 
 Press :kbd{value="Ctrl+O"}, then :kbd{value="Enter"} to save, and :kbd{value="Ctrl+X"} to exit.
 
-### Done !
+### Done!
 ::
 
 That's it! File Browser Quantum is now exposed.