remove empty section Calendar & Contacts

- https://github.com/nodiscc/hecat/runs/8169138010?check_suite_focus=true
- ERROR:awesome_lint.py: 0 items tagged Calendar & Contacts, each tag must have at least 3 items attached

README.md

@@ -20,7 +20,6 @@ See [Contributing](.github/CONTRIBUTING.md).
   - [Blogging Platforms](#blogging-platforms)
   - [Booking and Scheduling](#booking-and-scheduling)
   - [Bookmarks and Link Sharing](#bookmarks-and-link-sharing)
-  - [Calendar & Contacts](#calendar--contacts)
   - [Calendar & Contacts - CalDAV or CardDAV Servers](#calendar--contacts---caldav-or-carddav-servers)
   - [Calendar & Contacts - CalDAV or CardDAV Web-based Clients](#calendar--contacts---caldav-or-carddav-web-based-clients)
   - [Communication](#communication)
@@ -265,24 +264,17 @@ Software which allows users to add, annotate, edit, and share [bookmarks](https:
 - [xBrowserSync](https://www.xbrowsersync.org) - Open source tool for syncing browser data between browsers and devices. ([Source Code](https://github.com/xBrowserSync)) `MIT` `Nodejs`
 
 
-### Calendar & Contacts
+### Calendar & Contacts - CalDAV or CardDAV Servers
 
 **[`^        back to top        ^`](#)**
 
-[Electronic calendar](https://en.wikipedia.org/wiki/Calendaring_software) and [address book](https://en.wikipedia.org/wiki/Address_book)/[contact management](https://en.wikipedia.org/wiki/Contact_manager) software.
+[CalDAV](https://en.wikipedia.org/wiki/CalDAV) and [CardDAV](https://en.wikipedia.org/wiki/CardDAV) protocol servers [Electronic calendar](https://en.wikipedia.org/wiki/Calendaring_software) and [address book](https://en.wikipedia.org/wiki/Address_book) and [contact management](https://en.wikipedia.org/wiki/Contact_manager).
 
 _Related: [Groupware](#groupware)_
 
 _See also: [Comparison of CalDAV and CardDAV implementations - Wikipedia](https://en.wikipedia.org/wiki/Comparison_of_CalDAV_and_CardDAV_implementations)_
 
 
-
-### Calendar & Contacts - CalDAV or CardDAV Servers
-
-**[`^        back to top        ^`](#)**
-
-[CalDAV](https://en.wikipedia.org/wiki/CalDAV) and [CardDAV](https://en.wikipedia.org/wiki/CardDAV) protocol servers.
-
 - [Baïkal](https://sabre.io/baikal/) - Lightweight CalDAV and CardDAV server based on sabre/dav. ([Source Code](https://github.com/sabre-io/Baikal)) `GPL-3.0` `PHP`
 - [calypso](https://keithp.com/calypso/) - Python-based CalDAV and CardDAV server, forked from Radicale. ([Source Code](https://keithp.com/cgit/)) `GPL-3.0` `Python`
 - [DAViCal](https://www.davical.org/) - Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store. ([Source Code](https://gitlab.com/davical-project/davical)) `GPL-2.0` `PHP`