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

content/en/6.recycled/2.deprecated/2.file-browser.md

@@ -50,7 +50,7 @@ services:
 
 Deploy the container and go to `http://yourserverip:8010`. That’s it! Your File Browser web UI is up and running!
 
-### Done !
+### Done!
 ::
 
 ::caution
@@ -163,7 +163,7 @@ 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 is now exposed!