Update Doc.char_span docs [ci skip]
@@ -245,7 +245,9 @@ p Check whether an extension has been registered on the #[code Doc] class.
+tag method
+tag-new(2)
-p Create a #[code Span] object from the slice #[code doc.text[start : end]].
+p
+ | Create a #[code Span] object from the slice #[code doc.text[start : end]].
+ | Returns #[code None] if the character indices don't map to a valid span.
+aside-code("Example").
doc = nlp(u'I like New York')
@@ -276,7 +278,7 @@ p Create a #[code Span] object from the slice #[code doc.text[start : end]].
+row("foot")
+cell returns
+cell #[code Span]
- +cell The newly constructed object.
+ +cell The newly constructed object or #[code None].
+h(2, "similarity") Doc.similarity
+tag method
