try to make it more readable

storage/data_transfer.markdown

@@ -27,7 +27,8 @@ Recommended tool
 Typical usage:
 
 ```sh
-rsync -avP /path/to/local/folder/ dphysuser@login.phys.ethz.ch:/home/groupname/subfolder/
+rsync -avP /path/to/local/folder/ \
+dphysuser@login.phys.ethz.ch:/home/groupname/subfolder/
 ```
 
 See `man rsync` for a full documentation of all available options.
@@ -83,6 +84,7 @@ lftp sftp://dphysuser@login.phys.ethz.ch -e 'mirror --verbose --parallel=3 --use
 Use an additional rsync run to fix permissions after the data transfer with lftp:
 
 ```
-rsync -av --size-only --delete --inplace -v dphysuser@login.phys.ethz.ch:/path/to/remote/folder/ /path/to/local/folder/
+rsync -av --size-only --delete --inplace -v \ dphysuser@login.phys.ethz.ch:/path/to/remote/folder/ \
+/path/to/local/folder/
 ```