Remove references to textcat spans
Remove references to unimplemented `TextCategorizer` span labels in
`GoldParse` and `Doc`.
@@ -653,7 +653,7 @@ The L2 norm of the document's vector representation.
| `mem` | `Pool` | The document's local memory heap, for all C data it owns. |
| `vocab` | `Vocab` | The store of lexical types. |
| `tensor` <Tag variant="new">2</Tag> | `ndarray` | Container for dense vector representations. |
-| `cats` <Tag variant="new">2</Tag> | dictionary | Maps either a label to a score for categories applied to whole document, or `(start_char, end_char, label)` to score for categories applied to spans. `start_char` and `end_char` should be character offsets, label can be either a string or an integer ID, and score should be a float. |
+| `cats` <Tag variant="new">2</Tag> | dict | Maps a label to a score for categories applied to the document. The label is a string and the score should be a float. |
| `user_data` | - | A generic storage area, for user custom data. |
| `lang` <Tag variant="new">2.1</Tag> | int | Language of the document's vocabulary. |
| `lang_` <Tag variant="new">2.1</Tag> | unicode | Language of the document's vocabulary. |
