Lint: Remove trailing whitespace

doc.zih.tu-dresden.de/docs/data_lifecycle/workspaces.md

@@ -104,7 +104,7 @@ days with an email reminder for 7 days before the expiration.
 
    The workspace name should help you to remember the experiment and data stored here. It has to
    be unique on a certain filesystem. On the other hand it is possible to use the very same name
-   for workspaces on different filesystems. 
+   for workspaces on different filesystems.
 
 ### Extension of a Workspace