docs: fix edit distance string parameter name

[domg123-hermes]

Summary

• Fix commonality / edit_distance opcode descriptions to name the actual string-mode parameter key: string_edit_distance.
• Keep generated markdown docs aligned with the C++ OpcodeDetails source text.

Context

The parameter list and examples already use {string_edit_distance .true}, and the runtime lookup is registered as ENBISI_string_edit_distance / "string_edit_distance". The prose descriptions still referred to "use_string_edit_distance", which is not a registered key and is ignored by the current runtime.

Verification

• rg -n 'use_string_edit_distance' → no matches
• Probe with installed Amalgam:
  • (commonality "hello" "hello" {string_edit_distance .true}) → 5
  • (commonality "hello" "el" {string_edit_distance .true}) → 2
  • (edit_distance "hello" "el" {string_edit_distance .true}) → 3
  • (edit_distance "hello" "el" {use_string_edit_distance .true}) → 2 (old documented key is ignored)
• git diff --check passed
• Cursor Agent CLI reviewed the diff and found no blockers.

[howsohazard]

PR is now redundant due to the more comprehensive fix in #574