README: release link made generic

Instead of having to update the latest release link every time, now we
just link to the releases page.

Author: marnovandermaas

README.md

@@ -14,7 +14,7 @@ Sonata is part of the [Sunburst Project](https://www.sunburst-project.org) funde
 ## Current status
 
 We are delighted to announce the release of the Sonata system!
-The latest release is available now from GitHub [here][release-v1.0].
+The latest release is available on GitHub [here][releases].
 
 This new release provides a base FPGA image with I2C/SPI/UART peripherals that are suitable for use with the expansion headers as well as the on-board hardware.
 
@@ -25,7 +25,7 @@ Environment setup and build instructions are available for Windows, macOS and Li
 If you find any issues with the Sonata system, or have features you would like to propose, please [create an issue on GitHub][create-issue].
 For support with the board itself please use the [forum][newae-forum] on the NewAE website, create an issue on the [sonata-pcb repository][sonata-pcb], or reach out to NewAE directly.
 
-[release-v1.0]: https://github.com/lowRISC/sonata-system/releases/tag/v1.0
+[releases]: https://github.com/lowRISC/sonata-system/releases
 [sonata-software]: https://github.com/lowRISC/sonata-software
 [create-issue]: https://github.com/lowRISC/sonata-system/issues/new
 [newae-forum]: https://forum.newae.com/c/sonata-board/15