Update README.md

[monaiuu]

Summary of changes

update telegram link

Proposed area of change

Put an x in the boxes that apply.

• [ ] apps/bridge-dapp
• [ ] apps/hubble-stats
• [ ] apps/stats-dapp
• [ ] apps/tangle-dapp
• [ ] apps/testnet-leaderboard
• [ ] apps/faucet
• [ ] apps/zk-explorer
• [ ] libs/webb-ui-components

Reference issue to close (if applicable)

Specify any issues that can be closed from these changes (e.g. Closes #233).

• Closes

Screen Recording

If possible provide a screen recording of proposed change.

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Code Checklist

Please be sure to add .stories documentation if any additions are made to libs/webb-ui-components.

• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

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