feat(docs): update CIP pricing info (#1641)

Author: oliwiapolec

src/pages/extending-chat-widget/custom-identity-provider/index.mdx

@@ -16,7 +16,7 @@ versionGroup: "chat-widget"
 
 From the technical perspective, _custom identity_ is an ID assigned to each customer by our API. Based on that ID, we can match customer data and chat history with a specific person using our services. _Custom identity_ is not customer metadata such as name or email. If you would like to pass one of those, you are probably looking for [updating session variables](/extending-chat-widget/javascript-api/#update-session-variables).
 
-ℹ️ The Custom Identity Provider gives you full control over user authentication through the API. It counts toward your API usage and falls under the standard [API pricing](/getting-started/api-pricing).
+ℹ️ The Custom Identity Provider routes all of your widget traffic through the [Customer Chat API](/messaging/customer-chat-api). All requests from such implementation count toward your API usage and fall under the standard [API pricing](/getting-started/api-pricing).
 
 ## Setup
 

src/pages/messaging/agent-chat-api/index.mdx

@@ -35,7 +35,7 @@ The basics on authorization, access tokens, and scopes in the Agent Chat Web API
 
 ### Authorization
 
-**agent authorization** is handled with access tokens. Find out how to get an **access token** from [agent authorization flows](/authorization/agent-authorization/). Take note **you won't be able to use this token** for the Customer Chat API.
+**Agent authorization** is handled with access tokens. Find out how to get an **access token** from [agent authorization flows](/authorization/agent-authorization/). Take note **you won't be able to use this token** for the Customer Chat API.
 
 ### Scopes
 

src/pages/messaging/agent-chat-api/v3.5/index.mdx

@@ -34,7 +34,7 @@ The basics on authorization, access tokens, and scopes in the Agent Chat Web API
 
 ### Authorization
 
-**agent authorization** is handled with access tokens. Find out how to get an **access token** from [Agent authorization flows](/authorization/agent-authorization/). Take note **you won't be able to use this token** for the Customer Chat API.
+**Agent authorization** is handled with access tokens. Find out how to get an **access token** from [Agent authorization flows](/authorization/agent-authorization/). Take note **you won't be able to use this token** for the Customer Chat API.
 
 ### Scopes