Updated the document with shellcheck as a build requirement and updation of sed command in Dev Guide document. (#4432)
Updated the document with shellcheck as a build requirement and updation of sed command in Dev Guide document. (#4432)

* changes

Signed-off-by: ShubhamRwt <e31405d19f53520f22c2c542809589d2f44c72cf@gmail.com>

* Suggestion added

Signed-off-by: ShubhamRwt <e31405d19f53520f22c2c542809589d2f44c72cf@gmail.com>

* Suggestion added

Signed-off-by: ShubhamRwt <e31405d19f53520f22c2c542809589d2f44c72cf@gmail.com>
scholzj/barnabas,ppatierno/kaas,ppatierno/kaas,scholzj/barnabas