Correct CUE button label to match hardware silkscreen

The physical buttons just read CUE, not CUE DECK A/C etc.

Author: dtavan

source/hardware/controllers/denon_mc3000.md

@@ -97,7 +97,7 @@ controller and the Denon MC3000 mapping:
 | {hwlabel}`LEVEL` | Channel pregain/trim. |
 | {hwlabel}`FILTER` | QuickEffect filter. |
 | {hwlabel}`HI` / {hwlabel}`MID` / {hwlabel}`LOW` | 3-band channel EQ. |
-| {hwlabel}`CUE DECK A/C` / {hwlabel}`CUE DECK B/D` | Headphone cue (PFL) toggle. Only 2 physical buttons, one per channel strip; each toggles PFL for whichever deck (A or C on the left strip, B or D on the right strip) is currently active on that strip. |
+| {hwlabel}`CUE` (left channel strip) / {hwlabel}`CUE` (right channel strip) | Headphone cue (PFL) toggle. Only 2 physical buttons, one per channel strip; each toggles PFL for whichever deck (A or C on the left strip, B or D on the right strip) is currently active on that strip. |
 | {hwlabel}`KEY LOCK` | Toggles keylock for the deck. Off by default at startup for all four decks; see Mapping Settings above to change the default. |
 | {hwlabel}`SYNC` | Beat-syncs the deck. Hold past a short delay to enable continuous sync lock instead of a one-time sync. The LED lights while sync is active. |
 | {hwlabel}`SHIFT` + {hwlabel}`SYNC` | Toggles quantize for the deck. Off by default at startup for all four decks; see Mapping Settings above to change the default. |