Trigger sp_kill smoke test

[BrentOzar]

Summary

Adds a harmless whitespace-only tweak in sp_kill.sql so the new SQL Server smoke-test workflow has a root-level sp_*.sql change to test.

Expected result

The newly merged workflow should pick up sp_kill.sql, install it individually, and report the current standalone compile issue near tempdb.

Validation

This PR is intentionally meant to validate the GitHub Actions workflow behavior rather than change product behavior.

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[BrentOzar]

The new SQL Server smoke-test workflow did run on this PR and passed.

The important bit: this confirms the workflow is active on main and that a root-level sp_*.sql change (sp_kill.sql) is picked up by the PR workflow. My earlier local Incorrect syntax near 'tempdb' result came from the Homebrew Go-based sqlcmd; GitHub Actions uses Microsoft mssql-tools18 sqlcmd, and the script compiles successfully there.