Update some comments for rc_target_bitrate

It seems that this field was named rc_target_bandwidth before.

Change-Id: I009c2fa3bda0a4e69f5442926eee8ca1ddf7df87
diff --git a/aom/aom_encoder.h b/aom/aom_encoder.h
index a98c8d8..3ecca0f 100644
--- a/aom/aom_encoder.h
+++ b/aom/aom_encoder.h
@@ -614,7 +614,7 @@
 
   /*!\brief Target data rate
    *
-   * Target bandwidth to use for this stream, in kilobits per second.
+   * Target bitrate to use for this stream, in kilobits per second.
    */
   unsigned int rc_target_bitrate;
 
diff --git a/av1/av1_cx_iface.c b/av1/av1_cx_iface.c
index 9028d18..c28633f 100644
--- a/av1/av1_cx_iface.c
+++ b/av1/av1_cx_iface.c
@@ -3733,7 +3733,7 @@
       AOM_VBR,      // rc_end_usage
       { NULL, 0 },  // rc_twopass_stats_in
       { NULL, 0 },  // rc_firstpass_mb_stats_in
-      256,          // rc_target_bandwidth
+      256,          // rc_target_bitrate
       0,            // rc_min_quantizer
       63,           // rc_max_quantizer
       25,           // rc_undershoot_pct
@@ -3804,7 +3804,7 @@
       AOM_CBR,      // rc_end_usage
       { NULL, 0 },  // rc_twopass_stats_in
       { NULL, 0 },  // rc_firstpass_mb_stats_in
-      256,          // rc_target_bandwidth
+      256,          // rc_target_bitrate
       0,            // rc_min_quantizer
       63,           // rc_max_quantizer
       25,           // rc_undershoot_pct
@@ -3875,7 +3875,7 @@
       AOM_Q,        // rc_end_usage
       { NULL, 0 },  // rc_twopass_stats_in
       { NULL, 0 },  // rc_firstpass_mb_stats_in
-      256,          // rc_target_bandwidth
+      256,          // rc_target_bitrate
       0,            // rc_min_quantizer
       63,           // rc_max_quantizer
       25,           // rc_undershoot_pct