Fix RuboCop trailing whitespace in config/boot.rb

[Copilot]

Fixes RuboCop Layout/TrailingWhitespace violations preventing CI from passing.

Changes:

• Removed trailing spaces from comment on line 7
• Removed trailing spaces from blank line 10

-# This allows older gems to modify frozen autoload_paths arrays  
+# This allows older gems to modify frozen autoload_paths arrays
 class Array
   alias_method :original_freeze, :freeze
-  
+
   def freeze

Original prompt

The RuboCop GitHub Actions job is failing due to trailing whitespace in config/boot.rb (see failing job: https://github.com/tuanle03/code_learn_api/actions/runs/19318971978/job/55256226652 and job id 55256226652). Create a new branch, update config/boot.rb to remove any trailing whitespace characters (notably at the end of the comment line describing autoload_paths and on any blank lines), ensure the file ends with a single newline and no trailing spaces on any lines, and commit the change with message: "Fix RuboCop trailing whitespace in config/boot.rb". After committing, open a pull request titled "Fix RuboCop trailing whitespace in config/boot.rb" with a description explaining that this PR fixes RuboCop Layout/TrailingWhitespace offenses so the CI RuboCop workflow can pass. Verify the change is minimal and doesn't alter code behavior. File to modify: config/boot.rb. The updated file content should remove trailing whitespace from lines and preserve existing code and comments.

Reference: job logs show: "config/boot.rb:10:1: C: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected." Use that information to target the fix.

This pull request was created as a result of the following prompt from Copilot chat.

The RuboCop GitHub Actions job is failing due to trailing whitespace in config/boot.rb (see failing job: https://github.com/tuanle03/code_learn_api/actions/runs/19318971978/job/55256226652 and job id 55256226652). Create a new branch, update config/boot.rb to remove any trailing whitespace characters (notably at the end of the comment line describing autoload_paths and on any blank lines), ensure the file ends with a single newline and no trailing spaces on any lines, and commit the change with message: "Fix RuboCop trailing whitespace in config/boot.rb". After committing, open a pull request titled "Fix RuboCop trailing whitespace in config/boot.rb" with a description explaining that this PR fixes RuboCop Layout/TrailingWhitespace offenses so the CI RuboCop workflow can pass. Verify the change is minimal and doesn't alter code behavior. File to modify: config/boot.rb. The updated file content should remove trailing whitespace from lines and preserve existing code and comments.

Reference: job logs show: "config/boot.rb:10:1: C: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected." Use that information to target the fix.

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