Small improvements to libfuzzer doc.

Bug: 41491378
Change-Id: Iabffee9259cc1426920868a05288dc3e8956c21b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5302747
Reviewed-by: Titouan Rigoudy <[email protected]>
Reviewed-by: Alexei Svitkine <[email protected]>
Commit-Queue: Alexei Svitkine <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1261662}
diff --git a/testing/libfuzzer/getting_started_with_libfuzzer.md b/testing/libfuzzer/getting_started_with_libfuzzer.md
index 63942d0..6bace5b1 100644
--- a/testing/libfuzzer/getting_started_with_libfuzzer.md
+++ b/testing/libfuzzer/getting_started_with_libfuzzer.md
@@ -202,12 +202,12 @@
 ### Running the fuzz target
 
 After you create your fuzz target, build it with autoninja and run it locally.
-To make this example concrete, we are going to use the existing 
+To make this example concrete, we are going to use the existing
 `create_fnmatch_query_fuzzer` target.
 
 ```bash
 # Build the fuzz target.
-autoninja -C chrome/browser/ash:create_fnmatch_query_fuzzer
+autoninja -C out/libfuzzer chrome/browser/ash:create_fnmatch_query_fuzzer
 # Run the fuzz target.
 ./out/libfuzzer/create_fnmatch_query_fuzzer
 ```