Fix broken link in `pallets/handles/README.md` #6231

Job	Run time
Clear Metadata Labels	7s
Determine Changed Files	6s
Lint Rust Code	0s
Build ${{ matrix.network }} Binary on ${{ matrix.branch_alias }} Branch	0s
Build dev Binary on pr Branch	1s
Build local Binary on pr Branch	1s
Check for Vulnerable Crates	0s
Build local Binary on main Branch	1s
Verify Rust Code Format	0s
Calculate Code Coverage	0s
Build testnet Binary on pr Branch	1s
Build mainnet Binary on pr Branch	1s
Run Rust Tests	0s
Verify Build Runtime for dev	1s
Verify Rust Developer Docs	0s
Verify Build Runtime for paseo	1s
Verify Build Runtime for mainnet	1s
Verify Rust Packages and Dependencies	0s
Verify Build Runtime for ${{ matrix.network }}	0s
Verify JS API Augment	0s
Verify Node Docker Images	0s
Execute Binary Checks	0s
Check Metadata and Spec Version	0s
Verify Genesis State	0s
Run E2E Tests	0s
	21s

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