Updated readme - usage of python sdk

[Erol444]

What does this PR do?

Fix code snippet in readme, because rf.create_project() function does not exist

Type of Change

• Documentation update

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code where necessary, particularly in hard-to-understand areas
• My changes generate no new warnings or errors
• I have updated the documentation accordingly (if applicable)