help: Update help center links for channel permissions revision.

Updates a few existing links in the help center after the revisons
to the channel permissions documentation.

help/configure-automated-notices.md

@@ -14,7 +14,7 @@ language](/help/change-your-language).
 
 Notices about channel settings changes, such as [name](/help/rename-a-channel),
 [description](/help/change-the-channel-description),
-[permission](/help/channel-permissions) and
+[privacy](/help/change-the-privacy-of-a-channel) and
 [policy](/help/channel-posting-policy) updates are sent to the
 “channel events” topic in the channel that was modified.
 

help/configure-who-can-unsubscribe-others.md

@@ -1,9 +1,9 @@
 # Configure who can unsubscribe other users from a channel
 
-If you have permission to administer a public channel, you can configure who
+If you have permission to administer a public channel, you can configure
-can unsubscribe other users from it. For [private](/help/channel-permissions)
+who can unsubscribe other users from it. For [private
-channels, you additionally need to be a subscriber in order to change this
+channels](/help/channel-permissions#private-channels), you additionally
-configuration.
+need to be a subscriber in order to change this configuration.
 
 Organization administrators can unsubscribe other users from any channel.
 

help/export-your-organization.md

@@ -13,14 +13,14 @@ available for all Zulip organizations:
 * [**Export of public
    data**](#export-for-migrating-to-zulip-cloud-or-a-self-hosted-server):
    Complete data for your organization *other than* [private
-   channel](/help/channel-permissions) messages and [direct
+   channel](/help/channel-permissions#private-channels) messages and [direct
    messages](/help/direct-messages). This export includes user settings and
    channel subscriptions.
 
 * [**Standard
   export**](#export-for-migrating-to-zulip-cloud-or-a-self-hosted-server):
   Everything in the export of public data, plus all the [private
-  channel](/help/channel-permissions) messages and [direct
+  channel](/help/channel-permissions#private-channels) messages and [direct
   messages](/help/direct-messages) that members who have
   [allowed](#configure-whether-administrators-can-export-your-private-data)
   administrators to export their private data can access.

help/manage-permissions.md

@@ -6,8 +6,8 @@ User groups offer a flexible way to manage permissions.
 
 !!! tip ""
 
-    Learn about [channel permissions](/help/channel-permissions), including
+    Learn about channel [types and permissions](/help/channel-permissions),
-    **public** and **private** channels.
+    including **public** and **private** channels.
 
 ## Manage organization permissions