Update DB dictionary

What does this MR do and why?

This MR updates db/docs/zoekt_indexed_namespaces.yml so that description is matching the generated format, in order not to see the diff bellow after gdk update:

diff --git a/db/docs/zoekt_indexed_namespaces.yml b/db/docs/zoekt_indexed_namespaces.yml
index 1ab748ac154e..0ba69b849c21 100644
--- a/db/docs/zoekt_indexed_namespaces.yml
+++ b/db/docs/zoekt_indexed_namespaces.yml
@@ -4,7 +4,8 @@ classes:
 - Zoekt::IndexedNamespace
 feature_categories:
 - global_search
-description: Describes a namespace that is configured to use a specific Zoekt shard for code search
+description: Describes a namespace that is configured to use a specific Zoekt shard
+  for code search
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/105049
 milestone: '15.9'
 gitlab_schema: gitlab_main

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.