perf annotate: Rename 'colors.code' to 'colors.jump_arrows'

USe 'jump_arrows' config name instead of 'code' on 'colors' section.
'colors.code' config is only for jump arrows on assembly code listings
i.e.

│ ┌──jmp 1333
│ │ xchg %ax,%ax
│ │ mov %r15,%r10
│ └─→cmp %r15,%r14

But this config name seems unfit.

'jump_arrows' is more descriptive than 'code'.

Signed-off-by: Taeung Song <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/Documentation/perf-config.txt

···
 		medium = green, default
 		normal = lightgray, default
 		selected = white, lightgray
-		code = blue, default
+		jump_arrows = blue, default
 		addr = magenta, default
 		root = white, blue
 

tools/perf/Documentation/perfconfig.example

···
 	medium = green, lightgray
 	normal = black, lightgray
 	selected = lightgray, magenta
-	code = blue, lightgray
+	jump_arrows = blue, lightgray
 	addr = magenta, lightgray
 
 [tui]

tools/perf/ui/browser.c

···
 		.bg	  = "yellow",
 	},
 	{
-		.colorset = HE_COLORSET_CODE,
-		.name	  = "code",
+		.colorset = HE_COLORSET_JUMP_ARROWS,
+		.name	  = "jump_arrows",
 		.fg	  = "blue",
 		.bg	  = "default",
 	},

tools/perf/ui/browser.h

···
 #define HE_COLORSET_MEDIUM	51
 #define HE_COLORSET_NORMAL	52
 #define HE_COLORSET_SELECTED	53
-#define HE_COLORSET_CODE	54
+#define HE_COLORSET_JUMP_ARROWS	54
 #define HE_COLORSET_ADDR	55
 #define HE_COLORSET_ROOT	56
 

tools/perf/ui/browsers/annotate.c

···
 		to = (u64)btarget->idx;
 	}
 
-	ui_browser__set_color(browser, HE_COLORSET_CODE);
+	ui_browser__set_color(browser, HE_COLORSET_JUMP_ARROWS);
 	__ui_browser__line_arrow(browser, pcnt_width + 2 + ab->addr_width,
 				 from, to);
 }