Update description for hierarchy_depth

Co-authored-by: cragwolfe <[email protected]>

docs/source/metadata.rst

@@ -38,7 +38,7 @@ the source file:
 | parent_id                   | Element Hierarchy (Parent ID)                            | `parent_id` may be used to infer where an element resides within the overall hierarchy of a document. For instance, a `NarrativeText` element may have a `Title` element as a parent (a "sub-title"), which in turn may have another `Title` element as its parent (a "title).                                                                          |
 +-----------------------------+----------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | category_depth              | Element Depth relative to                                | Category depth is the depth of an element relative to other elements of the same category. It's set by a document partitioner and enables the hierarchy post-processor to compute more accurate hierarchies.                                                                                |
-|                             | other elements of the same category                      | Category depth is set using native document hierarchies (e.g., h1, h2, h3 or the indentation level of a bulleted list in a word document).                                                                                                                                                  |
+|                             | other elements of the same category                      | Category depth may be set using native document hierarchies, e.g.  reflecting \<H1>, \<H2>, or `\<H3>` tags within an HTML document or the indentation level of a bulleted list item in a Word document.                                                                                                                                         |
 +-----------------------------+----------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | text_as_html                | HTML representation of extracted tables                  |  Only applicable to table elements.                                                                                                                                                                                                                                                         |
 +-----------------------------+----------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+