Fix list of excluded hosts formatting

[sarahd93]

Checklist:

• [N/A] Tests
• CHANGELOG Entry

[codecov]

Codecov Report

Merging #1340 into gsa-8.0 will decrease coverage by <.01%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##           gsa-8.0    #1340      +/-   ##
===========================================
- Coverage    34.74%   34.73%   -0.01%     
===========================================
  Files          959      959              
  Lines        21597    21599       +2     
  Branches      5978     5957      -21     
===========================================
  Hits          7503     7503              
- Misses       12753    12755       +2     
  Partials      1341     1341

Impacted Files	Coverage Δ
gsa/src/web/pages/targets/details.js	10% <0%> (-0.72%)	⬇️

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