fix cargo doc for workspace #4182

Job	Run time
Clear Metadata Mismatch Label	43s
Determine Changed Files	52s
Run Benchmarks?	43s
Run Benchmarks	0s
Build dev Binary on pr Branch	1s
Build local Binary on pr Branch	1s
Build local Binary on main Branch	2s
Build rococo Binary on pr Branch	1s
Build mainnet Binary on pr Branch	1s
Check for Vulnerable Crates	0s
Verify Rust Code Format	0s
Build ${{ matrix.network }} Binary on ${{ matrix.branch_alias }} Branch	0s
Lint Rust Code	0s
Run Rust Tests	0s
Verify Rust Developer Docs	0s
Verify Rust Packages and Dependencies	0s
Calculate Code Coverage	0s
Verify Build Runtime for ${{ matrix.network }}	0s
Verify Build Runtime for rococo	1s
Verify Build Runtime for mainnet	1s
Verify CI Docker Image	0s
Verify JS API Augment	0s
Execute Binary Checks	0s
Verify Node Docker Images	0s
Check Metadata and Spec Version	0s
Verify Genesis State	0s
Run Integration Tests	0s
	2m 26s

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