Reworked the example of using external arbiter

Updated Split a rs across data centers to focus on PSA architecture
Added references to this setup in cross-site replication docs

Author: nastena1606

docs/arbiter.md

@@ -107,7 +107,7 @@ replsets:
 
 Find the description of other available options in the [replsets.nonvoting section](operator.md#replsetsnonvotingenabled) of the [Custom Resource options reference](operator.md).
 
-Note that you can add a non-voting node in the edge location through the `externalNodes` option. Please see [cross-site replication documentation](replication.md#voting-topologies-for-cross-site-replication) for details.
+Note that you can add a non-voting node or an external arbiter in another location through the `externalNodes` option. See [cross-site replication](replication.md#voting-members-across-sites) and [Splitting a replica set across multiple data centers](replication-multi-dc.md) for details.
 
 ## Hidden nodes
 

docs/assets/images/replication-pods-external-arbiter.svg

@@ -663,11 +663,7 @@ The [priority :octicons-link-external-16:](https://docs.mongodb.com/manual/refer
 
 ### `replsets.externalNodes.arbiterOnly`
 
-<<<<<<< HEAD
-Defines whether this [external replset instance](replication-main.md) acts as an [arbiter :octicons-link-external-16:](https://www.mongodb.com/docs/manual/core/replica-set-arbiter/) and makes an odd number of voting members in the multi-cluster setup.
-=======
-Defines whether this [external replset instance](replication-external-arbiter.md) acts as an [arbiter :octicons-link-external-16:](https://www.mongodb.com/docs/manual/core/replica-set-arbiter/) and makes an odd number of voting members in the multi-cluster setup. Available with the Operator version 1.23.0+.
->>>>>>> Potential fix for pull request finding
+Defines whether this [external replset instance](replication-multi-dc.md) acts as an [arbiter :octicons-link-external-16:](https://www.mongodb.com/docs/manual/core/replica-set-arbiter/) and makes an odd number of voting members in the multi-cluster setup. Available with the Operator version 1.23.0+.
 
 | Value type  | Example    |
 | ----------- | ---------- |