Updated guides for migrated plugins

[sbhadwal-moveworks]

No description provided.

[github-actions]

Changes to plugins/salesforce-lookup-contract-information/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=salesforce-lookup-contract-information&commit_id=e40f5d0c9ab46ce69e32e7044e02379cf016ec04; Changes to plugins/servicenow-check-license-inventory/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-check-license-inventory&commit_id=e40f5d0c9ab46ce69e32e7044e02379cf016ec04; Changes to plugins/servicenow-check-license-renewal-date/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-check-license-renewal-date&commit_id=e40f5d0c9ab46ce69e32e7044e02379cf016ec04; Changes to plugins/servicenow-lookup-cost-center/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-lookup-cost-center&commit_id=e40f5d0c9ab46ce69e32e7044e02379cf016ec04; Changes to plugins/servicenow-user-assets/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-user-assets&commit_id=e40f5d0c9ab46ce69e32e7044e02379cf016ec04;

[ghost]

🎉 Snyk checks have passed. No issues have been found so far.

✅ code/snyk check is complete. No issues have been found. (View Details)

[github-actions]

Changes to plugins/servicenow-check-license-inventory/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-check-license-inventory&commit_id=3937b8e1aa4d3ec0d92cb5dd3daab8889d1645be; Changes to plugins/servicenow-check-license-renewal-date/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-check-license-renewal-date&commit_id=3937b8e1aa4d3ec0d92cb5dd3daab8889d1645be; Changes to plugins/servicenow-lookup-cost-center/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-lookup-cost-center&commit_id=3937b8e1aa4d3ec0d92cb5dd3daab8889d1645be; Changes to plugins/servicenow-user-assets/README.md can be viewed at https://developer.moveworks.com/creator-studio/resources/plugin?id=servicenow-user-assets&commit_id=3937b8e1aa4d3ec0d92cb5dd3daab8889d1645be;