lavc/utils: fix typo and reword message in case of too low bitrate

libavcodec/utils.c

@@ -1044,7 +1044,7 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
         }
         if (   (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
             && avctx->bit_rate>0 && avctx->bit_rate<1000) {
-            av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extreemly low, did you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
+            av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
         }
 
         if (!avctx->rc_initial_buffer_occupancy)