Fix typo in U2F description (#4007)

options/locale/locale_en-US.ini

@@ -463,7 +463,7 @@ then_enter_passcode = And enter the passcode shown in the application:
 passcode_invalid = The passcode is incorrect. Try again.
 twofa_enrolled = Your account has been enrolled into two-factor authentication. Store your scratch token (%s) in a safe place as it is only shown once!
 
-u2f_desc = Security keys are hardware devices containing cryptograhic keys. They could be used for two factor authentication. The security key must support the <a href="https://fidoalliance.org/">FIDO U2F</a> standard.
+u2f_desc = Security keys are hardware devices containing cryptographic keys. They could be used for two factor authentication. The security key must support the <a href="https://fidoalliance.org/">FIDO U2F</a> standard.
 u2f_require_twofa = Two-Factor-Authentication must be enrolled in order to use security keys.
 u2f_register_key = Add Security Key
 u2f_nickname = Nickname