Fix readme typo in policy flag

[oranmoshai]

No description provided.

[codecov]

Codecov Report

Merging #805 (051fbaa) into main (a00d719) will decrease coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #805      +/-   ##
==========================================
- Coverage   68.50%   68.39%   -0.12%     
==========================================
  Files          57       57              
  Lines        2210     2202       -8     
==========================================
- Hits         1514     1506       -8     
  Misses        564      564              
  Partials      132      132              

Impacted Files	Coverage Δ
internal/app.go	98.38% <ø> (-0.10%)	⬇️
pkg/detector/ospkg/redhat/redhat.go	93.54% <100.00%> (+0.21%)	⬆️
pkg/vulnerability/vulnerability.go	76.69% <100.00%> (+0.46%)	⬆️

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