[docs]: Fix Sidebar Issue in GitSync Documentation

[RudraPratik30]

Updated the GitSync docs to fix the repetitive content issue and also fixed the sidebar issue.

Made the changes only in the next version for now, once approved will replicate the changes in the LTS as well.

[github-actions[bot]]

Deployment: https://tooljet-pr-10959.onrender.com Dashboard: https://dashboard.render.com/static/srv-cs6dmkrtq21c73dqgca0

[TooljetBot]

Code Review Agent Run Status

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[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud