Updated README.MD

README.md

@@ -41,3 +41,10 @@ An advanced example of a full record in the 5.1.1 format is available at https:/
 A basic example of a cnaContainer, to be used with CVE Services, is available at https://github.com/cveproject/cve-schema/blob/master/schema/docs/cnaContainer-basic-example.json
 
 An advanced example of a cnaContainer, to be used with CVE Services, is available at https://github.com/cveproject/cve-schema/blob/master/schema/docs/cnaContainer-advanced-example.json
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+### Running Tests
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+Before submitting a Pull Request (PR) with your proposed schema changes, it is recommended to run the tools/cve-schema-test.sh script (written in Bash) to ensure there are no errors. This helps prevent your PR from being rejected due to formatting issues when GitHub's workflow tools are executed.
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+Please note that any files created by this script will be overwritten when GitHub's workflow runs on the PR. This step is mandatory before the CVE Schema Working Group can review your suggestions.
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