Added database connection example to Singleton pattern

[MADHURI-HS]

Added an additional real-world example for the Singleton pattern.

This improves clarity by including database connection management as a practical use case.

[github-actions]

PR Summary

Expanded the Singleton pattern documentation by adding a real-world example: database connection management. The README now highlights using a single shared instance to manage database connections and clarifies when the Singleton pattern is appropriate.

Changes

File	Summary
singleton/README.md	Updated README to include a real-world Singleton use case: database connection management ensuring a single shared instance across the application. Adds a bullet under 'Use the Singleton pattern when'.

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autogenerated by presubmit.ai

[github-actions]

✅ LGTM!

Review Summary

Commits Considered (1)

• d2a8516: Added database connection example to Singleton pattern

Files Processed (1)

• singleton/README.md (1 hunk)

Actionable Comments (0)

Skipped Comments (1)

• singleton/README.md [81-81]

  best_practice: "Clarify DB usage pattern for Singleton example"

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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