order sections alphabetically

README.md

@@ -125,6 +125,17 @@ _See also: [WeblogMatrix](https://www.weblogmatrix.org/)_
 - [Serendipity](https://docs.s9y.org/) - Serendipity (s9y) is a highly extensible and customizable PHP blog engine using Smarty templating. ([Source Code](https://github.com/s9y/serendipity)) `BSD-3-Clause` `PHP`
 
 
+### Booking and Scheduling
+
+**[`^        back to top        ^`](#)**
+
+_Related: [Polls and Events](#polls-and-events)_
+
+- [Alf.io](https://alf.io/) - The open source ticket reservation system. ([Demo](https://demo.alf.io/authentication), [Source Code](https://github.com/alfio-event/alf.io)) `GPL-3.0` `Java`
+- [Calendso](https://calendso.com/) - The open-source online appointment scheduling system. ([Demo](https://app.calendso.com/bailey), [Source Code](https://github.com/calendso/calendso)) `MIT` `Nodejs`
+- [Easy!Appointments](https://easyappointments.org/) - A highly customizable web application that allows your customers to book appointments with you via the web. ([Demo](https://easyappointments.org/demo/), [Source Code](https://github.com/alextselegidis/easyappointments)) `GPL-3.0` `PHP`
+
+
 ### Bookmarks and Link Sharing
 
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@@ -1318,18 +1329,6 @@ _Related: [Booking and Scheduling](#booking-and-scheduling)_
 - [PHPBack](https://www.phpback.org) - The open source feedback system. ([Demo](https://www.phpback.org/demo/), [Source Code](https://github.com/ivandiazwm/phpback)) `GPL-3.0` `PHP`
 
 
-### Booking and Scheduling
-
-**[`^        back to top        ^`](#)**
-
-_Related: [Polls and Events](#polls-and-events)_
-
-
-- [Alf.io](https://alf.io/) - The open source ticket reservation system. ([Demo](https://demo.alf.io/authentication), [Source Code](https://github.com/alfio-event/alf.io)) `GPL-3.0` `Java`
-- [Calendso](https://calendso.com/) - The open-source online appointment scheduling system. ([Demo](https://app.calendso.com/bailey), [Source Code](https://github.com/calendso/calendso)) `MIT` `Nodejs`
-- [Easy!Appointments](https://easyappointments.org/) - A highly customizable web application that allows your customers to book appointments with you via the web. ([Demo](https://easyappointments.org/demo/), [Source Code](https://github.com/alextselegidis/easyappointments)) `GPL-3.0` `PHP`
-
-
 ### Proxy
 
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