Adjust documentaion wording

Signed-off-by: Julius Härtl <jus@bitgrid.net>

docs/User_documentation_en.md

@@ -165,16 +165,16 @@ In addition, quotes can be used to pass a query with spaces, e.g. `"Exact match
 You can transfer ownership of boards, cards, etc to a new user, using `occ` command `deck:transfer-ownership`
 
 ```bash
-php occ deck:transfer-ownership owner newOwner
+php occ deck:transfer-ownership previousOwner newOwner
 ```
 
 The transfer will preserve card details linked to the old owner, which can also be remapped by using the `--remap` option on the occ command.
 ```bash
-php occ deck:transfer-ownership --remap owner newOwner
+php occ deck:transfer-ownership --remap previousOwner newOwner
 ```
 
 Individual boards can be transferred by adding the id of the board to the command:
 
 ```bash
-php occ deck:transfer-ownership owner newOwner 123
+php occ deck:transfer-ownership previousOwner newOwner 123
 ```