sandbox: typo Fictionnal

%s/Fictionnal/Fictional/

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/sandbox/sandbox.c b/board/sandbox/sandbox.c
index ca9a2ca..38cfa08 100644
--- a/board/sandbox/sandbox.c
+++ b/board/sandbox/sandbox.c
@@ -129,7 +129,7 @@
 		snprintf(extension->name, sizeof(extension->name), "extension board %d", i);
 		snprintf(extension->owner, sizeof(extension->owner), "sandbox");
 		snprintf(extension->version, sizeof(extension->version), "1.1");
-		snprintf(extension->other, sizeof(extension->other), "Fictionnal extension board");
+		snprintf(extension->other, sizeof(extension->other), "Fictional extension board");
 		list_add_tail(&extension->list, extension_list);
 	}