fixed URL

Author: paulzim

labs/coding-101-rest-basics-ga/1.md

@@ -20,7 +20,7 @@ If you are on a DevNet Zone station, <a href="https://chrome.google.com/webstore
 
 **Access to an APIC-EM Controller**
 * To run these code samples, you will need access to an APIC-EM controller.
-* **If you are not using your own APIC-EM controller**, you can use the Always-On APIC-EM Lab: https[]()://devnetapi.cisco.com/sandbox/apic_em .
+* **If you are not using your own APIC-EM controller**, you can use the Always-On APIC-EM Lab: https://sandboxapicem.cisco.com .
 The login credentials for the always on sandbox are **username:** devnetuser and **password:** Cisco123!
 
 ## Step 1. Find the APIC-EM API Resources