Update quick_start.md

Author: ke-liu

guide/quick_start.md

@@ -81,7 +81,7 @@ Possible validation messages are:
   * `Fail to validate Xpresso "bundle profile" info from the entered bundle name - xxx Unexpected response from Xpresso - 404:Not Found`
 * Wrong input: `Failed - configure either testbeds or topology, but NOT both at the same time!`
 * Server connection issue: `Connect to xxx failed: Connection refused (Connection refused)`
-* Any other issues from S3: `Fail to validate Xpresso. Unexpected response from Xpresso - 401: Unauthorized`
+* Any other issues from Xpresso: `Fail to validate Xpresso. Unexpected response from Xpresso - 401: Unauthorized`
 
 ![](assets/images/buildconfig4.png)
 
@@ -97,4 +97,4 @@ Example of output when the "Block until completed" option disabled:
 
 Example of output when the "Block until completed" option enabled:
 
-![](assets/images/output2.png)
+![](assets/images/output2.png)