Update README with macOS ARM64 badges

Author: jmid

README.md

@@ -5,6 +5,7 @@ Multicore tests
 
 [![Linux 5.0.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500.yml)
 [![MacOSX 5.0.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-500.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-500.yml)
+[![MacOSX 5.0.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-500.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-500.yml)
 [![Linux 5.0.0-bytecode](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500-bytecode.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500-bytecode.yml)
 [![Linux 5.0.0-debug](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500-debug.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500-debug.yml)
 [![Linux 32-bit 5.0.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500-32bit.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-500-32bit.yml)
@@ -13,6 +14,7 @@ Multicore tests
 
 [![Linux 5.1.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x.yml)
 [![MacOSX 5.1.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-51x.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-51x.yml)
+[![MacOSX 5.1.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-51x.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-51x.yml)
 [![Linux 5.1.0-bytecode](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x-bytecode.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x-bytecode.yml)
 [![Linux 5.1.0-debug](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x-debug.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x-debug.yml)
 [![Linux 32-bit 5.1.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x-32bit.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-51x-32bit.yml)
@@ -23,6 +25,7 @@ Multicore tests
 
 [![Linux 5.2.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520.yml)
 [![MacOSX 5.2.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-520.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-520.yml)
+[![MacOSX 5.2.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-520.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-520.yml)
 [![Linux 5.2.0-bytecode](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520-bytecode.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520-bytecode.yml)
 [![Linux 5.2.0-debug](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520-debug.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520-debug.yml)
 [![Linux 32-bit 5.2.0](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520-32bit.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-520-32bit.yml)
@@ -33,6 +36,7 @@ Multicore tests
 
 [![Linux 5.3.0+trunk](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk.yml)
 [![MacOSX 5.3.0+trunk](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-530-trunk.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-intel-530-trunk.yml)
+[![MacOSX 5.3.0+trunk](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-530-trunk.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/macosx-arm64-530-trunk.yml)
 [![Linux 5.3.0+trunk-bytecode](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk-bytecode.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk-bytecode.yml)
 [![Linux 5.3.0+trunk-debug](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk-debug.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk-debug.yml)
 [![Linux 32-bit 5.3.0+trunk](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk-32bit.yml/badge.svg)](https://github.com/ocaml-multicore/multicoretests/actions/workflows/linux-530-trunk-32bit.yml)