docs: moved importers into a subsection in watchers

Author: ErikBjare

src/importers.rst

@@ -1,9 +1,7 @@
 Importers
 =========
 
-ActivityWatch can't track everything, so sometimes you might want to import data into ActivityWatch from another source.
-
-There aren't many yet, but here are some attempts:
+ActivityWatch can't track everything, so sometimes you might want to import data from another source.
 
 - :gh-aw:`aw-import-ical`, supports importing from ``.ical`` files or syncing with Google Calendar.
 - :gh-aw:`aw-importer-smartertime`, imports from `smartertime`_ (Android time tracker).

src/index.rst

@@ -21,7 +21,6 @@ Table of contents
    directories
    features
    watchers
-   importers
    faq
    history
    migrating

src/watchers.rst

@@ -63,6 +63,12 @@ Other watchers to collect all kinds of data.
 - :gh:`RTnhN/aw-watcher-toggl` - A Watcher to import time entries from Toggl.
 - :gh:`sameersismail/aw-watcher-netstatus` - Monitors if you're connected to a network, by :gh-user:`sameersismail`.
 
+Importers
+---------
+
+.. include:: importers.rst
+   :start-line: 2
+
 Custom visualizations
 ---------------------