Rename 'target workspace' to 'target_workspace' to fix Windows path issues

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Co-authored-by: rzhao271 <7199958+rzhao271@users.noreply.github.com>

Author: Copilot

src/test/testing/common/testingAdapter.test.ts

@@ -69,7 +69,7 @@ suite('End to End Tests: test adapters', () => {
         'testTestingRootWkspc',
         'symlinkWorkspace',
     );
-    const nestedTarget = path.join(EXTENSION_ROOT_DIR_FOR_TESTS, 'src', 'testTestingRootWkspc', 'target workspace');
+    const nestedTarget = path.join(EXTENSION_ROOT_DIR_FOR_TESTS, 'src', 'testTestingRootWkspc', 'target_workspace');
     const nestedSymlink = path.join(
         EXTENSION_ROOT_DIR_FOR_TESTS,
         'src',