linkifiers: Rename articles to current feature name.

These were previously called "linkification filters", but we now want
to consistently refer to them as "linkifiers" in the UI and API docs.

templates/zerver/api/add-linkifiers.md

@@ -1,6 +1,8 @@
-# Create organization filters
+# Create linkifiers
 
-Establish patterns in the messages that should be automatically linkified.
+Configure [linkifiers](/help/add-a-custom-linkification-filter),
+regular expression patterns that are automatically linkified when they
+appear in messages and topics.
 
 `POST {{ api_url }}/v1/realm/filters`
 

templates/zerver/api/list-linkifiers.md

@@ -1,6 +1,9 @@
-# List organization filters
+# List linkifiers
 
-Fetch all the filters set up for the user's organization.
+List all of an organization's configured
+[linkifiers](/help/add-a-custom-linkification-filter), regular
+expression patterns that are automatically linkified when they appear
+in messages and topics.
 
 `GET {{ api_url }}/v1/realm/filters`
 
@@ -40,11 +43,11 @@ curl {{ api_url }}/v1/realm/filters \
 
 #### Return values
 
-* `filters`: An array of sub-arrays, each representing one of the filters set
-  up in the organization. Each of these tuples contain the pattern, the
-  formatted URL and the filter's ID, in that order. See [Create organization
-  filters](/api/create-org-filters#create-organization-filters) for details on
-  what does each field mean.
+* `filters`: An array of tuples, each representing one of the
+  linkifiers set up in the organization. Each of these tuples contain the
+  pattern, the formatted URL and the filter's ID, in that order. See
+  the [Create linkifiers](/api/add-linkifiers) article for details on what
+  each field means.
 
 #### Example response
 

templates/zerver/api/remove-linkifiers.md

@@ -1,6 +1,8 @@
-# Remove organization filters
+# Remove linkifiers
 
-Remove an organization filter.
+Remove [linkifiers](/help/add-a-custom-linkification-filter), regular
+expression patterns that are automatically linkified when they appear
+in messages and topics.
 
 `DELETE {{ api_url }}/v1/realm/filters/<filter_id>`
 

templates/zerver/help/include/rest-endpoints.md

@@ -32,9 +32,9 @@
 #### Server & organizations
 
 * [Get server settings](/api/server-settings)
-* [List organization filters](/api/list-org-filters)
-* [Create organization filters](/api/create-org-filters)
-* [Remove organization filters](/api/remove-org-filters)
+* [List linkifiers](/api/list-linkifiers)
+* [Create organization filters](/api/add-linkifiers)
+* [Remove organization filters](/api/remove-linkifiers)
 * [Get all custom emoji](/api/get-org-emoji)
 
 #### Real-time events

zerver/openapi/zulip.yaml

@@ -1278,13 +1278,11 @@ paths:
                             anyOf:
                             - string
                             - integer
-                      description: An array of sub-arrays, each representing
-                        one of the filters set up in the organization. Each of
-                        these tuples contain the pattern, the formatted URL and
-                        the filter's ID, in that order.
-                        See [Create organization
-                        filters](/api/create-org-filters#create-organization-filters)
-                        for details on what does each field mean.
+                      description: An array of tuples, each representing one of the
+                        linkifiers set up in the organization. Each of these tuples contain the
+                        pattern, the formatted URL and the filter's ID, in that order. See
+                        the [Create linkifiers](/api/add-linkifiers) article for details on what
+                        each field means.
                 - example:
                     {
                         "msg": "",