Update index.html

Co-authored-by: Jan-Ivar Bruaroey <[email protected]>

index.html

@@ -374,8 +374,7 @@ <h2>Dictionary {{RTCRtpEncodingParameters}} Members</h2>
           <p>When {{scaleResolutionDownTo}} is specified, the
           {{RTCRtpEncodingParameters/scaleResolutionDownBy}} value MUST
           be ignored. Instead, frames are sent according to the
-          specified resolution restrictions: frames MUST either be downscaled or
-          sent as-is. The encoder MUST NOT upscale a frame. In simulcast, not
+          specified resolution restrictions: frames MUST NOT be upscaled. In simulcast, not
           upscaling can result in multiple same-sized encodings if the size of
           the frame is smaller than {{scaleResolutionDownTo}}; an encoding MUST
           NOT be sent if {{scaleResolutionDownTo}} is larger than the frame and