Rename Magenta to Zircon

Change-Id: Ib35ce2c2eff6a96dc4a972495c2cd07cf7bb2d42
diff --git a/src/os_fuchsia.c b/src/os_fuchsia.c
index 2caf690..389b73e 100644
--- a/src/os_fuchsia.c
+++ b/src/os_fuchsia.c
@@ -10,7 +10,7 @@
 
 #include "vim.h"
 
-#include <magenta/device/console.h>
+#include <zircon/device/console.h>
 
 /*
  * Get the current window size in Rows and Columns.