Fix golint for tour-of-beam test

[Abacn]

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[gemini-code-assist]

Summary of Changes

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This pull request introduces a minor formatting adjustment to the Tour of Beam backend documentation. The change ensures that the README file ends with a newline character, which is a standard practice for maintaining clean file structures and preventing potential issues with automated code analysis tools.

Highlights

• Documentation Formatting: Added a trailing newline to the README file to ensure consistent file termination and improve compatibility with linting tools.

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[gemini-code-assist]

Code Review

This pull request adds a trailing newline to the README.md file in the tour-of-beam backend directory. The review feedback identifies that an unnecessary blank line was added at the end of the file and suggests that the last line of text should simply end with a newline character to comply with standard practices and avoid linter warnings.

[gemini-code-assist]

This change adds an unnecessary blank line at the end of the file. To resolve 'missing newline' warnings, it is standard practice to ensure the last line of text ends with a newline character rather than adding a new empty line. This avoids potential issues with other linters that check for trailing whitespace or multiple blank lines.

[Abacn]

We need to upgrade Go version used for tour-of-beam if want to move forward.