#1025 merged hot-rank adapters for eastmoney/tdx/ths but the
accompanying docs were missing. This breaks the Doc Check CI
workflow on every PR ('--strict' mode, exits non-zero when
`scripts/check-doc-coverage.sh` finds adapters without docs),
blocking merges across the board.
Adds a doc page per adapter, registers them in the adapters
index table, and adds sidebar entries in the VitePress config.
jakevin