Apply suggestions from code review

Co-authored-by: Damien Alexandre <[email protected]>

Author: pyrech

docs/2-usage.md

@@ -33,7 +33,7 @@ $members = $client->usersList(['limit' => 100])->getMembers();
 
 ## Iterating over pagination
 
-Some Slack API endpoints use a token based pagination.
+Some Slack API endpoints use a cursor based pagination.
 
 In addition to classical methods, our client provides additional virtual methods
 to ease the iteration over those endpoints. Those methods can be called by

docs/3-troubleshoots.md

@@ -15,7 +15,7 @@ manually add it to our [versioned spec](https://github.com/jolicode/slack-php-ap
 ## Missing data in the DTO?
 
 The Slack specification is not up to date and miss some critical parts. We do
-build a [better one on top of the official](doc/updating-sdk.md) but it can't
+build a [better one on top of the official](4-updating-sdk.md) but it can't
 be perfect.
 
 What's good is that some models use `\ArrayObject` as base classes so if the