spelling: globally change “implementor” to “implementer” #1766

1. 
   jonatack commented at 6:00 pm on February 13, 2025: member

   Although the spelling variant “implementor” predominated for much of the late 20th century, today “implementer” is considered standard, and the former spelling now triggers our spelling checker as seen in https://github.com/bitcoin/bips/actions/runs/13311854592/job/37176150838?pr=1765.
2. spelling: globally change "implementor" to "implementer"

   Although the variant "implementor" predominated for much of the late 20th
   century, today "implementer" is considered standard, and the former spelling
   triggers the typos spelling checker.

   468e9759ba
3. murchandamus approved
4. 
   murchandamus commented at 8:15 pm on February 13, 2025: contributor

   Funny reason, but LGTM.

   ACK 468e9759ba3ab9b58d1cadd300b92f5bd43727dc

5. murchandamus merged this on Feb 13, 2025
6. murchandamus closed this on Feb 13, 2025

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7. jonatack deleted the branch on Feb 13, 2025

Contributors
jonatack murchandamus