MarketDataApp
`sdk/go/funds/candles.mdx` describes `funds.WithCandleWindow(w funds.DateWindow)` but the page never documents `DateWindow` itself. It linked to `#datewindow`, an anchor that has never existed. Found by Docusaurus 3.10's broken-anchor check, which 3.0.1 did not have. The link has been degraded to plain code (`funds.DateWindow`) so the anchor gate can be enforced, but the reader still has nowhere to learn what the type is. The sibling page `sdk/go/stocks/candles.mdx` has a `## Date Windows` section that is the model to follow. When the section is written, restore the link as `[`DateWindow`](#date-windows)`.