chore: fix typos in src/main/java/com/thealgorithms/ciphers/AES.java

[khanhkhanhlele]

This PR fixes typos in the file src/main/java/com/thealgorithms/ciphers/AES.java.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.32%. Comparing base (5323084) to head (2915e7f).

Files with missing lines	Patch %	Lines
src/main/java/com/thealgorithms/ciphers/AES.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #7047   +/-   ##
=========================================
  Coverage     78.32%   78.32%           
  Complexity     6656     6656           
=========================================
  Files           751      751           
  Lines         22162    22162           
  Branches       4353     4353           
=========================================
  Hits          17359    17359           
  Misses         4104     4104           
  Partials        699      699           

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