review troll powerup doc

doc/integration/trello_power_up.md

 # Trello Power-Up
 
-GitLab's Trello Power-Up enables you to seamlessly attach GitLab merge requests to Trello cards.
+GitLab's Trello Power-Up enables you to seamlessly attach
+GitLab **merge requests** to Trello cards.
 
 ## Configuring the Power-Up
 
 In order to get started, you will need to configure your Power-Up.
 
-1. Go to your Trello board
+In Trello:
 
+1. Go to your Trello board
 1. Select `Power-Ups` to see a listing of all the available Power-Ups
-
 1. Look for a row that says `GitLab` and select the `Enable` button
-
 1. Select the `Settings` (gear) icon
-
 1. In the popup menu, select `Authorize Account`
 
 In this popup, fill in your `API URL` and `Personal Access Token`. After that, you will be able to attach any merge request to any Trello card on your selected Trello board.
 
 ## What is my API URL?
 
-Your API URL should be your gitlab instance URL with `/api/v4` appended in the end of the URL.
-For example, if your gitlab instance URL is `https://mygitlab.com`, your API URL would be `https://mygitlab.com/api/v4`.
+Your API URL should be your GitLab instance URL with `/api/v4` appended in the end of the URL.
+For example, if your GitLab instance URL is `https://gitlab.com`, your API URL would be `https://gitlab.com/api/v4`.
+If your instance's URL is `https://example.com`, your API URL will be `https://example.com/api/v4`.
 
 ## What is my Personal Access Token?
 
-You can learn more about generating a personal access token in the [Personal Access Token Documentation][personal-access-token-documentation]. Don't forget to check the API scope checkbox.
+Your GitLab's personal access token will enable your GitLab account to be accessed
+from Trello.
+
+> Find it in GitLab by clicking on your avatar (upright corner), from which you access
+your user **Settings** > **Access Tokens**.
+
+Learn more about generating a personal access token in the
+[Personal Access Token Documentation][personal-access-token-documentation].
+Don't forget to check the API scope checkbox!
 
 [personal-access-token-documentation]: ../user/profile/personal_access_tokens.html