Fixed links and tech track duration

-Fixed broken links according to the review I received.
-Updated duration to 15 weeks, agreed with Merkle

Author: MercedesUbeira

courses/qa/README.md

@@ -6,10 +6,10 @@ Our QA Tech Track offers a comprehensive 12-week training program designed to eq
 
 | Name                                                                               | Weeks           |
 | ---------------------------------------------------------------------------------- | --------------- |
-| [Basics Of Testing](courses\qa\basics-of-testing\README.md)                        | 4               |
-| [Test Automation](courses\qa\test-automation\README.md)                            | 4               |
-| [Test Management](courses\qa\test-management\README.md)                            | 4               |
-| [Career Training](courses\qa\career-training\README.md)                            | 1               |
+| [Basics Of Testing](/courses/qa/basics-of-testing/README.md)                       | 5               |
+| [Test Automation](/courses/qa/test-automation/README.md)                           | 5               |
+| [Test Management](/courses/qa/test-management/README.md)                           | 4               |
+| [Career Training](/courses/qa/career-training/README.md)                           | 1               |
 
 
-Total: 13 weeks
+Total: 15 weeks