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

content/en/3.serveex/4.monitoring/4.beszel.md

@@ -108,7 +108,7 @@ For the `KEY` value, you'll need to launch Beszel once to get it.
 
 Deploy the container and go to `http://yourserverip:8090`. Your Beszel web UI is now accessible!
 
-### Done !
+### Done!
 ::
 
 ::caution
@@ -286,7 +286,7 @@ server {
 
 Press :kbd{value="Ctrl+O"}, then :kbd{value="Enter"} to save, and :kbd{value="Ctrl+X"} to exit.
 
-### Done !
+### Done!
 ::
 
 That’s it! Beszel is now exposed!