docs: update outdated screenshots (#11630)

# Which Problems Are Solved

Update outdated screenshots in the docs. 

# How the Problems Are Solved

By replacing the outdated ones with current screenshots

# Additional Changes
Replace the usage of "authorization" with "role assignments" in docs
where it was previously missed.

# Additional Context
- Follow-up for PR https://github.com/zitadel/zitadel/pull/11588
- there are some more docs to be updated, which will be done in a
following PR

---------

Co-authored-by: Copilot <[email protected]>

apps/docs/content/examples/secure-api/go.mdx

@@ -62,7 +62,7 @@ Give the service account a name and a username. Select `Bearer` as *Access Token
 
 ![](../../../public/img/go/api-create_service_user.png)
 
-### Create service account and personal access token (PAT)
+### Create a service account and a personal access token (PAT)
 
 Once done, from the left panel of the user management, click on Personal Access Token and create a new one.
 
@@ -205,11 +205,11 @@ Finally, create the role as shown below:
 
 ![Create project role in management console](../../../public/img/go/api-project-role.png)
 
-After you have created the role, let's grant it the user, who requested the tasks.
-Click on `Authorization` in the navigation and create a new one by selecting the user and the `admin` role.
+After you have created the role, let's grant it to the user who requested the tasks.
+Click on `Role Assignments` in the navigation and create a new one by selecting the user and the `admin` role.
 After successful creation, it should look like:
 
-![Created authorization in management console](../../../public/img/go/api-project-auth.png)
+![Created role assignment in management console](../../../public/img/go/api-project-auth.png)
 
 So you should now be able to add a new task: