Update mapped pages for my recently released docs (#2991)

As discussed in slack

---------

Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

Author: philippkahr

manage-data/ingest/transform-enrich/error-handling.md

@@ -1,6 +1,4 @@
 ---
-mapped_pages:
-  - https://www.elastic.co/docs/manage-data/ingest/transform-enrich/error-handling.html
 applies_to:
   stack: ga
   serverless: ga

manage-data/ingest/transform-enrich/ingest-lag.md

@@ -1,6 +1,4 @@
 ---
-mapped_pages:
-  - https://www.elastic.co/docs/manage-data/ingest/transform-enrich/calculate-ingest-lag.html
 applies_to:
   stack: ga
   serverless: ga
@@ -99,16 +97,6 @@ As discussed above `@timestamp` is set to the timestamp from within the collecte
 
 Regardless of the chosen architecture, add a `remove` processor at the end of the pipeline to drop the `_tmp` field. The raw timestamps from the various processing steps are not needed, as the latency in seconds should be sufficient. For additional pipeline architectures, refer to [Ingest architectures](../ingest-reference-architectures.md).
 
-## Logstash
-
-When Logstash is added to the architecture we must add a timestamp, this can only be done by using Ruby and the simplest form is this:
-
-```
-ruby {
-  code => "event.set('[_tmp][logstash_seen]', Time.now());"
-}
-```
-
 ### Elastic Agent to Elasticsearch
 
 Use `@timestamp` and `event.ingested` to calculate the difference. This will give you the following document. The `event.ingestion.latency` is in seconds.
@@ -156,6 +144,15 @@ POST _ingest/pipeline/_simulate
     }
 }
 ```
+### Logstash
+
+When Logstash is added to the architecture we must add a timestamp, this can only be done by using Ruby and the simplest form is this:
+
+```
+ruby {
+  code => "event.set('[_tmp][logstash_seen]', Time.now());"
+}
+```
 
 ### Elastic Agent => Logstash => Elasticsearch
 

manage-data/ingest/transform-enrich/readable-maintainable-ingest-pipelines.md

@@ -1,6 +1,4 @@
 ---
-mapped_pages:
-  - https://www.elastic.co/docs/manage-data/ingest/transform-enrich/common-mistakes.html
 applies_to:
   stack: ga
   serverless: ga