Update documentation of vertex bit layout
3 bits after mode indicate the vertex
@@ -44,7 +44,7 @@ The layout of an `H3Index` for vertexes is shown below in table form. The interp
<th>0x30</th>
<td>Reserved (0)</td>
<td colspan="4">Mode (4)</td>
- <td colspan="3">Edge</td>
+ <td colspan="3">Vertex</td>
<td colspan="4">Resolution</td>
<td colspan="4">Base cell</td>
</tr>
