update topic description

Author: fabik111

locales/en-US/arduino-cloud.html

@@ -10,7 +10,7 @@ <h3>Outputs</h3>
 
     <dl class="message-properties">
       <dt>topic <span class="property-type">string</span></dt>
-      <dd>the message topic.</dd>
+      <dd>the property name.</dd>
       <dt>payload <span class="property-type"></span></dt>
       <dd>the property incoming value.</dd>
       <dd>The payload format type is the property type for primitive types. Instead, for multi-value property the payload is a JSON object according documented notation.</dd>
@@ -113,7 +113,7 @@ <h3>Outputs</h3>
 
     <dl class="message-properties">
       <dt>topic <span class="property-type">string</span></dt>
-      <dd>the message topic.</dd>
+      <dd>the property name.</dd>
       <dt>payload.data <span class="property-type">JSON</span></dt>
       <dd>array of elements <p><code>{x: value_timestamp, y: value}</code></p> </dd>
       <dd>The value format type is the property type for primitive types. Instead, for multi-value property the value is a JSON object according documented notation.</dd>
@@ -165,7 +165,7 @@ <h3>Outputs</h3>
 
     <dl class="message-properties">
       <dt>topic <span class="property-type">string</span></dt>
-      <dd>the message topic.</dd>
+      <dd>the property name.</dd>
       <dt>payload <span class="property-type"></span></dt>
       <dd>the property last value.</dd>
       <dd>The payload format type is the property type for primitive types. Instead, for multi-value property the payload is a JSON object according documented notation.</dd>
@@ -223,7 +223,7 @@ <h3>Outputs</h3>
 
     <dl class="message-properties">
       <dt>topic <span class="property-type">string</span></dt>
-      <dd>the message topic.</dd>
+      <dd>the property name.</dd>
       <dt>payload <span class="property-type"></span></dt>
       <dd>the property last value.</dd>
       <dd>The payload format type is the property type for primitive types. Instead, for multi-value property the payload is a JSON object according documented notation.</dd>