reference sparky in readme

README.md

@@ -134,6 +134,7 @@ In addition to being able to host netboot.xyz locally, you can also create your
 |Regolith|https://regolith-linux.org| No | Yes |
 |Scientific Linux|https://scientificlinux.org| Yes | No |
 |Slackware|https://www.slackware.com| Yes | No |
+|SparkyLinux|https://sparkylinux.org/| No | Yes |
 |Tails|https://tails.boum.org | No | Yes |
 |Tiny Core Linux|https://tinycorelinux.net| ISO - Memdisk | No |
 |Ubuntu|https://www.ubuntu.com| Yes | Yes |