docs: update doc links

[joseph-isaacs]

fixup links for vortex from spiral and the docs. subdomain

[a10y]

Looks like api.foojay.io is down, which is unfortunately somewhat common from what I gather in Java forum posts

[codspeed-hq]

Merging this PR will improve performance by 26.14%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 5 improved benchmarks
✅ 1531 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	chunked_bool_canonical_into[(1000, 10)]	35.5 µs	20.5 µs	+72.69%
⚡	Simulation	chunked_varbinview_canonical_into[(1000, 10)]	198.1 µs	162 µs	+22.32%
⚡	Simulation	chunked_varbinview_into_canonical[(1000, 10)]	213.5 µs	177.4 µs	+20.4%
⚡	Simulation	bitwise_not_vortex_buffer_mut[128]	244.4 ns	215.3 ns	+13.55%
⚡	Simulation	bitwise_not_vortex_buffer_mut[1024]	304.7 ns	275.6 ns	+10.58%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing ji/fixup-doc-links (dad4ec8) with develop (8acef3a)}