Enhance Keycloak documentation with client scopes

Added a section on client scopes and their built-in options. Updated the description for evaluating scopes and viewing generated access tokens.

Author: monodot

_articles/keycloak.md

@@ -3,12 +3,32 @@ layout: page
 title: Keycloak
 ---
 
+## Terminology
+
+### Client > Client scopes
+
+Some built-in client scopes are:
+
+- openid - use this scope to signal that you're using OpenID Connect
+- profile
+- acr
+- address
+- basic
+- email
+- microprofile-jwt
+- offline_access
+- organization
+- phone
+- profile
+- roles
+- web-origins
+
 ## Cookbook
 
 ### Evaluate scopes and view a generated access token
 
 Go to Clients -> (client name) -> Client scopes -> Evaluate.
 
-This allows you to see **protocol mappers** in action and see what a generated access token will look like with the current settings.
+This allows you to see **protocol mappers** in action, and effectively see what a generated access token would look like, with the current settings.
 
 This is very useful when integrating other apps with Keycloak, to see what data will be shared with the third party app.