machine_bios.py: Fix typo.

[tacker66]

No description provided.

[codecov]

Codecov Report

Merging #12396 (c535f88) into master (58f6349) will decrease coverage by 0.01%.
Report is 18 commits behind head on master.
The diff coverage is n/a.

❗ Current head c535f88 differs from pull request most recent head c854d0e. Consider uploading reports for the commit c854d0e to get more accurate results

@@            Coverage Diff             @@
##           master   #12396      +/-   ##
==========================================
- Coverage   98.39%   98.38%   -0.01%     
==========================================
  Files         158      158              
  Lines       20938    20933       -5     
==========================================
- Hits        20601    20595       -6     
- Misses        337      338       +1     

see 7 files with indirect coverage changes

[dpgeorge]

Thanks for the fix!