Fix docs for 'no-limit' query parameter

Change searches can be limitless if the index backend supports that.
This option needs to be passed as a separate parameter, not as part of
'o' (list change options).

Change-Id: I39a1b88cde5607690f59e7836b973d6fcfa97c96

Documentation/rest-api-changes.txt

diff --git a/Documentation/rest-api-changes.txt b/Documentation/rest-api-changes.txt
index 6cb111b..73ff085 100644
--- a/Documentation/rest-api-changes.txt
+++ b/Documentation/rest-api-changes.txt
@@ -73,7 +73,9 @@
 Queries changes visible to the caller. The
 link:user-search.html#_search_operators[query string] must be provided
 by the `q` parameter. The `n` parameter can be used to limit the
-returned results.
+returned results. The `no-limit` parameter can be used remove the default
+limit on queries and return all results. This might not be supported by
+all index backends.
 
 As result a list of link:#change-info[ChangeInfo] entries is returned.
 The change output is sorted by the last update time, most recently
@@ -369,11 +371,6 @@
   as link:#tracking-id-info[TrackingIdInfo].
 --
 
-[[no-limit]]
---
-* `NO-LIMIT`: Return all results
---
-
 .Request
 ----
   GET /changes/?q=97&o=CURRENT_REVISION&o=CURRENT_COMMIT&o=CURRENT_FILES&o=DOWNLOAD_COMMANDS HTTP/1.0