Switch 3.0.0-alpha1 builds back to upstream (#5408)

Signed-off-by: Peter Zhu <zhujiaxi@amazon.com>

Author: peterzhuamazon

manifests/3.0.0-alpha1/opensearch-dashboards-3.0.0-alpha1.yml

@@ -9,7 +9,7 @@ ci:
     name: opensearchstaging/ci-runner:ci-runner-almalinux8-opensearch-dashboards-build-v1
 components:
   - name: OpenSearch-Dashboards
-    repository: https://github.com/peterzhuamazon/OpenSearch-Dashboards.git
+    repository: https://github.com/opensearch-project/OpenSearch-Dashboards.git
     ref: main
   - name: functionalTestDashboards
     repository: https://github.com/opensearch-project/opensearch-dashboards-functional-test.git