Try to workaround expired SSL issue in flowblok.id.au

README.md

@@ -597,7 +597,7 @@ Useful Articles for developing on the micro:bit.
 - [Exploring the BBC micro:bit Software Stack](https://mattwarren.org/2017/11/28/Exploring-the-BBC-microbit-Software-Stack/) - What’s in it, what it does and how it all fits together.
 - [Building the 1,000 BBC micro:bit Display](https://www.kitronik.co.uk/blog/building-the-bbc-microbit-matrix-display/) - Building a screen to show images from a thousand BBC micro:bits.
 - [micro:bit Radio Packets](https://ukbaz.github.io/howto/ubit_radio.html) - Explanation of the MakeCode radio packet specification (built on top of the micro:bit DAL spec) and how to communicate between MakeCode and MicroPython programs via radio.
-- [Synchronized Music on micro:bits](https://blog.flowblok.id.au/2018-02/synchronized-music-on-microbits.html) - Building a micro:bit mesh network so they can play music synchronized across a large area.
+- [Synchronized Music on micro:bits](http://blog.flowblok.id.au/2018-02/synchronized-music-on-microbits.html) - Building a micro:bit mesh network so they can play music synchronized across a large area.
 - [Using the Built-in Sensors](https://learn.adafruit.com/micro-bit-lesson-1-using-the-built-in-sensors) - Learn how to use the micro:bit's built-in accelerometer and magnetometer.
 - [Read micro:bit data from Linux via Bluetooth (BLE)](https://github.com/alcir/microbit-ble) - Random notes and examples about micro:bit BLE and Linux.
 - [Measure pressure with your micro:bit](https://www.instructables.com/id/Measure-Pressure-With-Your-Microbit/) - An inexpensive and easy to build device to perform pressure measurements and demonstrate Boyle's law with the micro:bit and BMP280 pressure/temperature sensor.