Enable links in attributes's descriptions

[rgosse]

Adding a @link within an attribute description currently throws:

Error: The TSDocConfiguration does not allow a EmphasisSpan node to contain a node of type LinkTag

It prevents from writing things like:

/**
 * Indices allowing to retrieve a cell in a cellSet.
 */
export interface CellIndices {
  rowIndex: number;
  columnIndex: number;
  /**
   * @deprecated use `rowIndex` and `columnIndex` to retrieve a {@link Cell} from the chart metadata's `cellMatrix`.
   */
  cellIndex: number;
}