fix: cli init site on windows

[ChiragAgg5k]

• 🐛 Bug Report: appwrite init site sdk-for-cli#181

Summary by CodeRabbit

Bug Fixes

• Updated validation message for the server configuration option
• Removed unnecessary directory initialization steps during project setup

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[coderabbitai]

Walkthrough

Two files were modified with straightforward changes. In generate.ts, an error message validation text was updated to reference a different flag name. In init.ts, four lines of shell commands that created and navigated to the current directory were removed from two conditional branches, simplifying the git initialization process.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly relates to the main change: fixing CLI initialization on Windows by removing problematic directory creation commands that were preventing git operations from working correctly.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

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[M4dhav]

Hey @ChiragAgg5k , this does not fix the issue on Windows, as the issue is not just the directory being created but also the checkout commands and commit filtering commands using Unix syntax.

[M4dhav]

Please check #1316