Fix typo in errors
@@ -483,7 +483,7 @@ class Errors(metaclass=ErrorsWithCodes):
"components, since spans are only views of the Doc. Use Doc and "
"Token attributes (or custom extension attributes) only and remove "
"the following: {attrs}")
- E181 = ("Received invalid attributes for unkown object {obj}: {attrs}. "
+ E181 = ("Received invalid attributes for unknown object {obj}: {attrs}. "
"Only Doc and Token attributes are supported.")
E182 = ("Received invalid attribute declaration: {attr}\nDid you forget "
"to define the attribute? For example: `{attr}.???`")
