[dev] [9base] update for new MIT license?

Hello, On March 23, 2021, Nokia transferred the copyrights in the Plan 9 software to the Plan 9 Foundation, which relicensed them under the MIT license. I wonder if 9base should change the license as well? upstream commit: https://github.com/9fans/plan9port/commit/88a87fadae6629932d9c160f53ad5d79

[dev] [website] broken links to plan9.bell-labs.com

Hello, I noticed that there are broken links in https://suckless.org/community/ that is linking to plan9.bell-labs.com, which should be replaced with 9p.io/plan9/. Regards, Roy