Fix oatdump usage message

For oat files, the whole path needs to be specified (including the ISA).

Bug: 120224267
Test: manual
Change-Id: I03fa0a62f19d8c5433cd5eba5ebdfbcb94d074f6
diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index 0e17425..5679a7c 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -3488,7 +3488,7 @@
         "\n"
         // Either oat-file or image is required.
         "  --oat-file=<file.oat>: specifies an input oat filename.\n"
-        "      Example: --oat-file=/system/framework/boot.oat\n"
+        "      Example: --oat-file=/system/framework/arm64/boot.oat\n"
         "\n"
         "  --image=<file.art>: specifies an input image location.\n"
         "      Example: --image=/system/framework/boot.art\n"