Update xilinx doc links (#2387) · calyxir/calyx@687fbb3

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

public documentation for `PosIdx` links to private item `PositionTable`

public documentation for `PosIdx` links to private item `PositionTable::indices`

public documentation for `FileIdx` links to private item `PositionTable`

public documentation for `FileIdx` links to private item `PositionTable::files`

public documentation for `GPosIdx` links to private item `PositionTable`

unclosed HTML tag `out`

unclosed HTML tag `err`

unclosed HTML tag `null`

this URL is not a hyperlink

unresolved link to `super::BoolAttr::Nointerface`

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