config_dump_json_parser: Update README

BUG=None
TEST=None

Change-Id: I244d1a9f7af2f26ee895078980aa7f8ddaad9d7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/test_planner/+/1644399
Reviewed-by: Mike Nichols <mikenichols@chromium.org>
Commit-Queue: Sean Abraham <seanabraham@chromium.org>
Tested-by: Sean Abraham <seanabraham@chromium.org>
diff --git a/src/testplans/contrib/cmd/config_dump_json_parser/README.md b/src/testplans/contrib/cmd/config_dump_json_parser/README.md
index fdfa839..182949a 100644
--- a/src/testplans/contrib/cmd/config_dump_json_parser/README.md
+++ b/src/testplans/contrib/cmd/config_dump_json_parser/README.md
@@ -17,5 +17,5 @@
 Now run the script:
 
 ```shell
-go run cmd/dev_config_dump_json_parser/main.go --config_dump_json_path=${HOME}/tmp/config_dump.json
-```
\ No newline at end of file
+go run contrib/cmd/config_dump_json_parser/main.go --config_dump_json_path=${HOME}/tmp/config_dump.json
+```