docs: Fix other help pages that were renamed or moved, to save a redirect.

docs/overview/changelog.md

@@ -1042,7 +1042,7 @@ _Released 2022-03-29_
   manage a variety of workflows, including support interactions,
   answering questions, and investigating issues.
 - Administrators may enable the option to create [web-public
-  streams](https://zulip.com/help/web-public-streams). Web-public
+  streams](https://zulip.com/help/public-access-option). Web-public
   streams can be viewed by anyone on the Internet without creating an
   account in your organization.
 - Users can now select a status emoji alongside their status

docs/production/security-model.md

@@ -133,7 +133,7 @@ strength allowed is controlled by two settings in
     be deleted at any time by that administrator.
 
   - See
-    [Restrict message editing and deletion](https://zulip.com/help/configure-message-editing-and-deletion)
+    [Restrict message editing and deletion](https://zulip.com/help/restrict-message-editing-and-deletion)
     for more details.
 
 ## Users and bots

docs/subsystems/markdown.md

@@ -138,7 +138,7 @@ Zulip's Markdown processor's rendering supports a number of features
 that depend on realm-specific or user-specific data. For example, the
 realm could have
 [linkifiers](https://zulip.com/help/add-a-custom-linkifier)
-or [custom emoji](https://zulip.com/help/add-custom-emoji)
+or [custom emoji](https://zulip.com/help/custom-emoji)
 configured, and Zulip supports mentions for streams, users, and user
 groups (which depend on data like users' names, IDs, etc.).
 

templates/corporate/for/open-source.html

@@ -209,7 +209,7 @@
                     </li>
                     <li>
                         <div class="list-content">
-                            Part-time participants <a href="/help/finding-a-topic-to-read">
+                            Part-time participants <a href="/help/finding-a-conversation-to-read">
                             quickly zero in</a> on the conversations they care
                             about. This is not possible with other chat tools
                             like Slack or Discord.
@@ -421,7 +421,7 @@
                             Use <a href="/help/emoji-reactions">emoji
                             reactions</a> for lightweight
                             interactions. Have fun
-                            with <a href="/help/add-custom-emoji">custom
+                            with <a href="/help/custom-emoji">custom
                             emoji</a> and gather feedback
                             with <a href="/help/create-a-poll">polls</a>.
                         </div>

web/templates/settings/display_settings.hbs

@@ -68,7 +68,7 @@
           setting_name="translate_emoticons"
           is_checked=settings_object.translate_emoticons
           label=settings_label.translate_emoticons
-          help_link="/help/enable-emoticon-translations"
+          help_link="/help/configure-emoticon-translations"
           prefix=prefix}}
 
         {{> settings_checkbox

zerver/openapi/zulip.yaml

@@ -9790,7 +9790,7 @@ paths:
       description: |
         This endpoint is used to upload a custom emoji for use in the user's
         organization. Access to this endpoint depends on the
-        [organization's configuration](https://zulip.com/help/only-allow-admins-to-add-emoji).
+        [organization's configuration](https://zulip.com/help/custom-emoji#change-who-can-add-custom-emoji).
       x-parameter-description: |
         As described above, the image file to upload must be provided in the
         request's body.