Update remote control documentation

Author: argilo

resources/remote-control.txt

@@ -42,7 +42,7 @@ Supported commands:
  U DSP <status>
     Set DSP (SDR receiver) status to <status>
  u RDS
-    Get RDS decoder to <status>.  Only functions in WFM mode.
+    Get RDS decoder status.  Only functions in WFM mode.
  U RDS <status>
     Set RDS decoder to <status>.  Only functions in WFM mode.
  u MUTE