Move Implementing Service Ping to separate page

doc/development/service_ping/metrics_dictionary.md

@@ -217,7 +217,7 @@ create  ee/config/metrics/counts_7d/issues.yml
 
 ## Metrics added dynamic to Service Ping payload
 
-The [Redis HLL metrics](index.md#known-events-are-added-automatically-in-service-data-payload) are added automatically to Service Ping payload.
+The [Redis HLL metrics](implement.md#known-events-are-added-automatically-in-service-data-payload) are added automatically to Service Ping payload.
 
 A YAML metric definition is required for each metric. A dedicated generator is provided to create metric definitions for Redis HLL events.
 

doc/development/service_ping/metrics_lifecycle.md

@@ -10,7 +10,7 @@ The following guidelines explain the steps to follow at each stage of a metric's
 
 ## Add a new metric
 
-Please follow the [Implementing Service Ping](index.md#implementing-service-ping) guide.
+Follow the [Implement Service Ping](implement.md) guide.
 
 ## Change an existing metric
 

doc/development/service_ping/review_guidelines.md

@@ -59,7 +59,7 @@ are regular backend changes.
   metrics that are based on Database.
 - For tracking using Redis HLL (HyperLogLog):
   - Check the Redis slot.
-  - Check if a [feature flag is needed](index.md#recommendations).
+  - Check if a [feature flag is needed](implement.md#recommendations).
 - For a metric's YAML definition:
   - Check the metric's `description`.
   - Check the metric's `key_path`.