docs: fix the troubleshooting doc

[zhiying-lin]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Requirements:

• run make reviewable for basic local test
• Read and followed fleet-networking's Code of conduct.
• uses conventional commit messages
• includes documentation
• adds unit tests

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[kaito-pr-agent]

Title

(Describe updated until commit f4afbae)

Fix typo in DNSBasedGlobalLoadBalancing troubleshooting doc

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Description

• Corrected typo in troubleshooting documentation

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Changes walkthrough 📝

	Relevant files
Documentation	DNSBasedGlobalLoadBalancing.md Corrected typo in troubleshooting steps                                    docs/toubleshooting/DNSBasedGlobalLoadBalancing.md Fixed incorrect reference from TrafficManagerBackend to TrafficManagerProfile +1/-1

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PR Reviewer Guide 🔍

(Review updated until commit f4afbae)

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Possible Issue The instruction to delete the TrafficManagerProfile and re-create it might be incorrect. It should likely be to delete the TrafficManagerBackend and re-create it, as per the old code. - Ensure that the Azure traffic manager profile exists, which could be manually deleted by other users. To recover this profile, you need to delete the `TrafficManagerProfile` and re-create it.