Fix Markdown lint

Author: timoa

README.md

@@ -258,4 +258,4 @@ This will return an array of results:
 [sonarcloud-bugs-badge]: https://sonarcloud.io/api/project_badges/measure?project=timoa_nodejs-encryption-api-example&metric=bugs
 [sonarcloud-codesmells-badge]: https://sonarcloud.io/api/project_badges/measure?project=timoa_nodejs-encryption-api-example&metric=code_smells
 [sonarcloud-coverage-badge]: https://sonarcloud.io/api/project_badges/measure?project=timoa_nodejs-encryption-api-example&metric=coverage
-[sonarcloud-duplicated-badge]: https://sonarcloud.io/api/project_badges/measure?project=timoa_nodejs-encryption-api-example&metric=duplicated_lines_density
+[sonarcloud-duplicated-badge]: https://sonarcloud.io/api/project_badges/measure?project=timoa_nodejs-encryption-api-example&metric=duplicated_lines_densit