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Co-authored-by: Emil Lundberg <emil@yubico.com>

index.bs

@@ -6573,7 +6573,7 @@ and the corresponding value is the <dfn>authenticator extension output</dfn> for
 as a separate map, keyed with the same [=extension identifier=]. This map only contains entries for authenticator
 extensions that make use of unsigned outputs. Unsigned outputs are useful when extensions output a signature over
 the [=authenticator data=] (because otherwise a signature would have to sign over itself, which isn't possible) or when
-the extension outputs should not be sent to the RP.
+some extension outputs should not be sent to the [=[RP]=].
 
 Note: In [[!FIDO-CTAP]] [=unsigned extension outputs=] are returned as a CBOR map in a top-level field named
 `unsignedExtensionOutputs` from both [=authenticatorMakeCredential=] and [=authenticatorGetAssertion=].