Fix examples/unityplugin docs.

TBR=qiangchen@chromium.org

No-Try: True
Bug: webrtc:10544
Change-Id: I7e691b5420215a920214147747139c4ffaceebfa
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132705
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27582}
diff --git a/examples/unityplugin/ANDROID_INSTRUCTION b/examples/unityplugin/ANDROID_INSTRUCTION
index f0149eb..d5f7399 100644
--- a/examples/unityplugin/ANDROID_INSTRUCTION
+++ b/examples/unityplugin/ANDROID_INSTRUCTION
@@ -1,7 +1,7 @@
 Instruction of running webrtc_unity_plugin on Android Unity
 
 1. On Linux machine, compile target webrtc_unity_plugin.
-   Checkout WebRTC codebase: fetch --no-hooks webrtc_android
+   Checkout WebRTC codebase: fetch --nohooks webrtc_android
    If you already have a checkout for linux, add target_os=”android” into .gclient file.
       Run gclient sync
       Run gn args out/Android, and again set target_os=”android” in the args.gn