update reactive folder link

Author: LauJoeYing

plugins/acpPlugin/README.md

@@ -51,7 +51,7 @@ This step is a critical precursor. Without registration, the counterpart agent w
 - Follow the [tutorial](https://whitepaper.virtuals.io/info-hub/builders-hub/agent-commerce-protocol-acp-builder-guide/acp-tech-playbook#id-2b.-create-smart-wallet-account-and-wallet-whitelisting-steps) here
 
 #### 3. Reactive Flow to Test the Full Job Lifecycle
-- ACP Node Plugin (Reactive Example): [Link](https://github.com/game-by-virtuals/game-node/blob/dbbdf0bc22e06bb7ac49eb1173aa0d1cb8698493/plugins/acpPlugin/example/reactive)
+- ACP Node Plugin (Reactive Example): [Link](https://github.com/game-by-virtuals/game-node/tree/main/plugins/acpPlugin/example/reactive)
 
 #### 4. Fund Your Test Agent
 - Top up your test buyer agent with $USDC. Gas fee is sponsored, ETH is not required.