Update ID Resolution Custom Identifier Screenshot

src/unify/identity-resolution/identity-resolution-onboarding.md

@@ -40,7 +40,7 @@ During the space creation process, the first step is to choose an Identity Resol
 
 ![Choose an Identity Resolution configuration](images/first_screen.png)
 
-### Out-of-the-Box
+### Out-of-the-box
 
 For most first-time users, Segment recommends that you use the out-of-the-box configuration and answer a short series of questions for a best-fit setup for your use-case.
 
@@ -70,7 +70,7 @@ Segment's 11 default are:
 
 You can also provide a trait or property key to match on to add custom identifiers. You can preview the locations where Segment looks for the identifier. Segment accepts both camelCase and snake_case for context.traits, traits, and properties, but accepts lowercase types for identifiers only in the context.externalIds object.
 
-![Provide a trait or property key to match on](images/custom_identifiers.png)
+![Screenshot of the Custom Identifier interface in Segment. The 'Trait / Property key to match on' field is filled with 'app_id.' Two preview message locations are displayed, showing examples of JSON-like event payloads with 'appId' or 'app_id' as traits or properties. The interface includes settings to limit the value count to 5 and set frequency to 'Ever.' At the bottom, there's an option to 'Add new identifier' or 'Cancel.'](images/custom_identifiers.png)
 
 #### Blocked values
 
@@ -176,7 +176,7 @@ You can review the identifiers, priorities, limits, and blocked values before yo
 
 After you configure Identity Resolution settings, the next step is to connect a [source](/docs/connections/sources/) to the Segment space.
 
-## Create an Audience
+## Create an audience
 
 After you connect a source, Segment creates user profiles based off of replayed and newly incoming data.