Updating README.md for MSFT Ignite.

Author: WritingPanda

README.md

@@ -59,27 +59,19 @@ This lab will have you utilize Secret Scanning with Push Protection to prevent s
 
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-### Lab 6 - Hands-on with Security Overview
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-This lab will teach you how to effectively use the Security Overview to review and alerts and coverage in an organization.
-
-- Get started here - [Lab 6](./_labs/lab6.md)
-
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 ### Extra Credit: Advanced CodeQL Setup
 
 This open-ended extra credit lab will have you switch to the advanced CodeQL setup.
 
-- Get started here - [Extra Credit Lab 1](./_labs/lab7-ec.md)
+- Get started here - [Extra Credit Lab 1](./_labs/lab6-ec.md)
 
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 ### Extra Credit: Custom Patterns for Secret Scanning
 
 This open-ended extra credit lab will have you create a custom secret scanning pattern.
 
-- Get started here - [Extra Credit Lab 2](./_labs/lab8-ec.md)
+- Get started here - [Extra Credit Lab 2](./_labs/lab7-ec.md)
 
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