Docs: Fix ingest doc links (#801)

The ingest docs in Elasticsearch doing point to the actual ingest APIs.
This makes up generate links to the real APIs instead, fixing some
broken links in the 5.x docs in the process.

Author: nik9000

scripts/utils/generateDocs.js

@@ -152,7 +152,12 @@ const LINK_OVERRIDES = {
   'license.post_start_basic': '{ref}/start-basic.html',
   'license.post_start_trial': '{ref}/start-trial.html',
   'migration.deprecations': '{ref}/migration-api-deprecation.html',
-  'monitoring.bulk': '{ref}/es-monitoring.html'
+  'monitoring.bulk': '{ref}/es-monitoring.html',
+  'ingest.delete_pipeline': '{ref}/delete-pipeline-api.html',
+  'ingest.get_pipeline': '{ref}/get-pipeline-api.html',
+  'ingest.put_pipeline': '{ref}/put-pipeline-api.html',
+  'ingest.simulate': '{ref}/simulate-pipeline-api.html',
+  'ingest.processor_grok': '{ref}/grok-processor.html#grok-processor-rest-get'
 }
 // Fixes bad urls in the JSON spec
 function fixLink (name, str) {
@@ -168,7 +173,6 @@ function fixLink (name, str) {
   str = str.replace(/frozen\.html/, 'freeze-index-api.html')
   str = str.replace(/ml-file-structure\.html/, 'ml-find-file-structure.html')
   str = str.replace(/security-api-get-user-privileges\.html/, 'security-api-get-privileges.html')
-  str = str.replace(/security-api-get-user-privileges\.html/, 'security-api-get-privileges.html')
 
   return str
 }