features.conf.sample: Sample sound files incorrectly quoted

ASTERISK-29136 #close

Change-Id: I3186536d65a50014c8da4780c9224919caa81440

configs/samples/features.conf.sample

@@ -26,8 +26,8 @@
                                 ; By default, this is 2.
 ;transferdialattempts = 3       ; Number of times that a transferer may attempt to dial an extension before
                                 ; being kicked back to the original call.
-;transferretrysound = "beep"    ; Sound to play when a transferer fails to dial a valid extension.
-;transferinvalidsound = "beeperr" ; Sound to play when a transferer fails to dial a valid extension and is out of retries.
+;transferretrysound = beep      ; Sound to play when a transferer fails to dial a valid extension.
+;transferinvalidsound = beeperr ; Sound to play when a transferer fails to dial a valid extension and is out of retries.
 ;atxferabort = *1               ; cancel the attended transfer
 ;atxfercomplete = *2            ; complete the attended transfer, dropping out of the call
 ;atxferthreeway = *3            ; complete the attended transfer, but stay in the call. This will turn the call into a multi-party bridge