Fix: remove floating Javadoc comments causing compilation error

[BixbyCodes]

Fix: remove floating Javadoc comments causing -Werror compilation failure

Three files had Javadoc comments placed above the package statement,
not attached to any declaration. With -Werror enabled, this caused
the entire build to fail with "warnings found and -Werror specified".

Files fixed:

• conversions/AnyBaseToAnyBase.java

• searches/InterpolationSearch.java

• searches/LinearSearch.java

• I have read CONTRIBUTING.md.

• This pull request is all my own work -- I have not plagiarized it.

• All filenames are in PascalCase.

• All functions and variable names follow Java naming conventions.

• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.

• All new algorithms include a corresponding test class that validates their functionality.

• All new code is formatted with clang-format

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.64%. Comparing base (0811cd0) to head (4bd2ee8).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7423      +/-   ##
============================================
+ Coverage     79.62%   79.64%   +0.01%     
- Complexity     7236     7239       +3     
============================================
  Files           800      800              
  Lines         23606    23606              
  Branches       4646     4646              
============================================
+ Hits          18797    18800       +3     
  Misses         4054     4054              
+ Partials        755      752       -3     

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