Update Commands.md

Author: blakadder

docs/Commands.md

@@ -228,7 +228,7 @@ SwitchRetain<a class="cmnd" id="switchretain"></a>|`0` = disable use of MQTT ret
 Subscribe<a class="cmnd" id="subscribe"></a>|Subscribes to an MQTT topic and assigns an Event name to it.<BR>`<eventName>, <mqttTopic> [, <key>]` = [Read more...](Subscribe-&-Unsubscribe)<br>`  ` = list all topics currently subscribed
 SwitchTopic<a class="cmnd" id="switchtopic"></a>|`<value>` = set MQTT switch topic<BR>`0` = disable use of MQTT switch topic<BR>`1` = set MQTT switch topic to device `%topic%`<BR>`2` = reset MQTT switch topic to firmware default (`MQTT_SWITCH_TOPIC`) *(default = `0`)*<BR>[Read more](Buttons-and-Switches) about this.<BR>_If using MQTT to issue this command, if it is used with the device `GroupTopic`, the command will not be executed._
 TelePeriod<a class="cmnd" id="teleperiod"></a>|See current value and force publish STATE message|`0` = disable telemetry messages<BR>`1` = reset telemetry period to firmware default (`TELE_PERIOD`)<BR>`10..3600` = set telemetry period in seconds *(default = `300`)*
-Topic<a class="cmnd" id="topic"></a>|`1` = reset MQTT topic to firmware default (`MQTT_TOPIC`) and restart<BR>`<value>` = set MQTT topic **and** `ButtonTopic` and restart.<BR>*If using MQTT to issue this command, if it is used with the device `GroupTopic`, the command will not be executed. (Mqtt Topic can't be equal to Mqtt Client)*
+Topic<a class="cmnd" id="topic"></a>|`1` = reset MQTT topic to firmware default (`MQTT_TOPIC`) and restart<BR>`<value>` = set MQTT topic **and** `ButtonTopic` and restart.<BR>*If using MQTT to issue this command, if it is used with the device `GroupTopic`, the command will not be executed. **Topic can not be identical to [`MqttClient`](#mqttclient)**
 Unsubscribe<a class="cmnd" id="unsubscribe"></a>|Unsubscribe from topics subscribed to with [`Subscribe`](#subscribe) <BR>`  ` = unsubscribe all topics<BR>`<eventName>` = unsubscribe from a specific MQTT topic
 See also|[`SetOption3`](#setoption3) - Disable//Enable MQTT<BR>[`SetOption4`](#setoption4) - Return MQTT response as `RESULT` or `%COMMAND%` topic<BR>[`SetOption10`](#setoption10) - Main topic change behavior