fix(config): add missing spaces in riscv64 threads warning

[btea]

The warning shown when running with multiple threads on riscv64 concatenated its string parts without trailing spaces, producing failures whenallocating and address spaceon riscv64.

This adds the missing spaces so the message reads correctly.

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api-docs-tooling	Ready	Preview	Jul 27, 2026 1:12pm

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PR Summary

Low Risk
User-visible warning text only; no behavior or configuration logic changes.

Overview
Fixes word concatenation in the riscv64 multithreading warning emitted from createRunConfiguration when merged.threads > 1 on riscv64.

Trailing spaces are added between the concatenated string fragments so the message reads “failures when allocating” and “virtual address space on riscv64” instead of whenallocating and spaceon.

A patch changeset documents the fix for @node-core/doc-kit.

^{Reviewed by Cursor Bugbot for commit 8777f37. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.21%. Comparing base (cef45ca) to head (8777f37).

Files with missing lines	Patch %	Lines
src/utils/configuration/index.mjs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #946   +/-   ##
=======================================
  Coverage   86.21%   86.21%           
=======================================
  Files         195      195           
  Lines       17690    17690           
  Branches     1609     1610    +1     
=======================================
  Hits        15251    15251           
  Misses       2433     2433           
  Partials        6        6           

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