[FIX] Fix docs about chat.react endpoint, add parameter to endpoint (#…

…693)

* Fix docs about chat.react endpoint, add parameter to endpoint

* Fix the explanation about chat.react ednpoint

developer-guides/rest-api/chat/react/README.md

@@ -12,6 +12,7 @@ Toggles the authenciated user's reaction to the provided message.
 | :--- | :--- | :--- | :--- |
 | `emoji` | `smile` | Required | The emoji to react with. |
 | `messageId` | `7aDSXtjMA3KPLxLjt` | Required | The message id to react to. |
+| `shouldReact` | `7aDSXtjMA3KPLxLjt` | Optional: `true` or `false` | Parameter to specify if the reaction should be added or removed. |
 
 The `emoji` does not have to contain the `:`'s. However, the emoji *does* have to exist.
 
@@ -22,7 +23,7 @@ curl -H "X-Auth-Token: 9HqLlyZOugoStsXCUfD_0YdwnNnunAJF8V47U3QHXSq" \
      -H "X-User-Id: aobEdbYhXfu5hkeqG" \
      -H "Content-type:application/json" \
      http://localhost:3000/api/v1/chat.react \
-     -d '{ "messageId": "7aDSXtjMA3KPLxLjt", "emoji": "smile" }'
+     -d '{ "messageId": "7aDSXtjMA3KPLxLjt", "emoji": "smile", "shouldReact": true }'
 ```
 
 ## Example Result
@@ -37,5 +38,6 @@ curl -H "X-Auth-Token: 9HqLlyZOugoStsXCUfD_0YdwnNnunAJF8V47U3QHXSq" \
 
 | Version | Description |
 | :--- | :--- |
+| 0.64.0 | Added parameter "shouldReact" to make endpoint work like a setter |
 | 0.63.0 | Emoji has to exist now |
 | 0.62.2 | Added |