doc: remove unshipped doc references from help and warning text #34839

This is a small follow-up to #34693 and addresses the remaining C++ help/warning strings discussed in #32565.

Some help and warning strings in bitcoind and bitcoin-wallet currently refer to markdown files under doc/ that are available in the source tree but are not shipped with Bitcoin Core binaries. This makes those messages less useful for users running distributed binaries.

This PR removes those references from:

• src/init.cpp
• src/wallet/init.cpp

The scope is intentionally narrow. It does not:

• change behavior
• ship documentation files
• refactor the help system

Testing:

• git diff --check

No new tests were added, since this change only updates user-facing help/warning text and does not modify behavior. Fixes #32565.

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The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

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Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/34839.

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Conflicts

Reviewers, this pull request conflicts with the following ones:

• #35027 (net: use -bind address for outgoing connections by 8144225309)
• #31974 (Drop testnet3 by Sjors)
• #31260 (scripted-diff: Type-safe settings retrieval by ryanofsky)
• #17783 (common: Disallow calling IsArgSet() on ALLOW_LIST options by ryanofsky)
• #17581 (refactor: Remove settings merge reverse precedence code by ryanofsky)
• #17580 (refactor: Add ALLOW_LIST flags and enforce usage in CheckArgFlags by ryanofsky)
• #17493 (util: Forbid ambiguous multiple assignments in config file by ryanofsky)

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

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LLM Linter (✨ experimental)

Possible typos and grammar issues:

• specified by below -> specified below [broken phrase; the intended meaning is clear only after guessing]

^{2026-05-19 02:22:09}

ACK 4ed0cc624f8b3457f632ac1698270d2f40bcfe91

Reviewed the diff and verified that the touched help/warning files no longer contain doc/*.md references.

Ran:

• git diff --check 52e8c1ce32a24d94b8fe06fa5e17bf8a176e50f0..HEAD
• rg -n 'doc/[A-Za-z0-9_./-]+\\.md|doc/[A-Za-z0-9_./-]+' src/init.cpp src/wallet/init.cpp\n\nI did not build binaries, since this is a help/warning text-only change.

Concept ACK - You've missed a few:

• doc/policy/packages.md
• doc/design/assumeutxo.md (links to master, not sure we want that)
• doc/descriptors.md

Updated in 160900070476cff1f79d0e7a7aefbf7ffe7979cc.

This removes the additional C++ RPC help references mentioned in the CACK:

• doc/policy/packages.md from submitpackage
• doc/design/assumeutxo.md / the master-branch link from loadtxoutset
• doc/descriptors.md from both scantxoutset and deriveaddresses

Re-ran:

• git diff --check 52e8c1ce32a24d94b8fe06fa5e17bf8a176e50f0..HEAD
• rg -n "doc/(policy/packages|design/assumeutxo|descriptors)\.md|github\.com/bitcoin/bitcoin/blob/master/doc/design/assumeutxo\.md" src/rpc src/init.cpp src/wallet/init.cpp

The grep now returns no matches. I did not build binaries, since this is still only help text changes.