Fix typo in README.md (openhab#15826)

Signed-off-by: mueller-ma <mueller-ma@users.noreply.github.com>

bundles/org.openhab.binding.ecovacs/README.md

@@ -114,7 +114,7 @@ The following actions are supported by the `command` channel:
 |--------------|-------------------------------------------|------------------------------------------------------|
 | `clean`      | Start cleaning in automatic mode.         |                                                      |
 | `spotArea`   | Start cleaning specific rooms.            | <ul><li>Only if supported by device, which can be recognized by `spotArea` being present in the list of possible states of the `current-cleaning-mode` channel.</li><li>Format: `spotArea:<room IDs>`, where `room IDs` is a semicolon separated list of room letters as shown in Ecovacs' app, so a valid command could e.g. be `spotArea:A;D;E`.</li><li>If you want to run 2 clean passes, amend `:x2` to the command, e.g. `spotArea:A;C;B:x2`.</li></ul> |
-| `customArea` | Start cleaning specific areas.            | <ul><li>Only if supported by device, which can be recognized by `customArea` being present in the list of possible states of the `current-cleaning-mode` channel.</li><li>Format: `customArea:<x1>;<y1>;<x2>;<y2>, where the parameters are coordinates (in mm) relative to the map.</li><li>The coordinates can be obtained from the `current-cleaning-spot-definition` channel when starting a custom area run from the app.</li><li>If you want to run 2 clean passes, amend `:x2` to the command, e.g. `customArea:100;100;1000;1000:x2`.</li></ul> |
+| `customArea` | Start cleaning specific areas.            | <ul><li>Only if supported by device, which can be recognized by `customArea` being present in the list of possible states of the `current-cleaning-mode` channel.</li><li>Format: `customArea:<x1>;<y1>;<x2>;<y2>`, where the parameters are coordinates (in mm) relative to the map.</li><li>The coordinates can be obtained from the `current-cleaning-spot-definition` channel when starting a custom area run from the app.</li><li>If you want to run 2 clean passes, amend `:x2` to the command, e.g. `customArea:100;100;1000;1000:x2`.</li></ul> |
 | `pause`      | Pause cleaning if it's currently active.  | If the device is idle, the command is ignored.       |
 | `resume`     | Resume cleaning if it's currently paused. | If the device is not paused, the command is ignored. |
 | `stop`       | Stop cleaning immediately.                |                                                      |