feat(dynamic programming -> knapsack): Update invalid example comment

[sathish-pv]

No description provided.

[appgurueu]

Could use a more interesting example though, for example a capacity of 8.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.97%. Comparing base (a08a122) to head (c4629a7).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #268      +/-   ##
==========================================
+ Coverage   96.82%   96.97%   +0.14%     
==========================================
  Files          98      101       +3     
  Lines        1829     1917      +88     
  Branches      345      358      +13     
==========================================
+ Hits         1771     1859      +88     
  Misses         58       58              

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