BIP388 fixups #1593

1. 
   jonatack commented at 5:02 pm on May 12, 2024: contributor

   Fixes 3 links and makes the reference implementation executable.
2. 
   jonatack commented at 5:03 pm on May 12, 2024: contributor

   cc @bigspider
3. bip-0388: fix 3 links e7fef46177
4. bip-0388: make reference implementation executable 4c689f7cf9
5. jonatack force-pushed on May 12, 2024
6. bigspider approved
7. 
   bigspider commented at 10:04 pm on May 12, 2024: contributor

   Thank you!
8. murchandamus approved
9. 
   murchandamus commented at 4:53 pm on May 13, 2024: contributor

   LGTM, approved by BIP Champion
10. murchandamus merged this on May 13, 2024
11. murchandamus closed this on May 13, 2024

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12. jonatack deleted the branch on May 13, 2024

Contributors
jonatack bigspider murchandamus