Add some docs for CDParanoia extraction speed

doc/user.rst

@@ -1056,6 +1056,8 @@ Plays audio CDs using libcdio. The URI has the form: "cdda://[DEVICE][/TRACK]".
      - Description
    * - **default_byte_order little_endian|big_endian**
      - If the CD drive does not specify a byte order, MPD assumes it is the CPU's native byte order. This setting allows overriding this.
+   * - **speed N**
+     - Request CDParanoia cap the extraction speed to Nx normal CD audio rotation speed, keeping the drive quiet.
 
 curl
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