Update CDA.md

Author: rishabkumar7

CDA.md

@@ -86,7 +86,7 @@ If your machine is stopped and then restarted, the public IP will change
 * It allows EC2 isntances to "learn" about themselves without having to use an IAM role for that purpose
 * Powerful but one of the least known features to developers
 * You can retrieve IAM roles from the metadata but **not** IAM policies
-* URL: {ec2-ip-address}/latest/meta-data
+* URL: 169.254.169.254/latest/meta-data
 
 ## EC2 Instance Launch Types 
 - **On Demand Instances**: short workload, predictable pricing