Add new webauthn pref to docs

diff --git a/docs/index.md b/docs/index.md
index 93975ce37ddd16d574474ea3603f166ff72ea7e0..5902111345ff96f4f12640be85b3290e7fdd2c32 100644 (file)
--- a/docs/index.md
+++ b/docs/index.md
@@ -5608,6 +5608,8 @@ as well as the following security preferences:
 |     If true, browser will accept TLS 1.0. and TLS 1.1. (Firefox 86, Firefox 78.8)
 | security.warn_submit_secure_to_insecure | boolean | true
 |     If false, no warning is shown when submitting a form from https to http.
+| security.webauthn.always_allow_direct_attestation | boolean | false
+|     If true, unnecessary (redundant) WebAuthn prompts are not shown.
 
 Using the preference as the key, set the `Value` to the corresponding preference value.