Adjust link to Airflow repository (#26)

diff --git a/hack/sample/cloudsql-celery/cluster.yaml b/hack/sample/cloudsql-celery/cluster.yaml
index 866613d..df66370 100644
--- a/hack/sample/cloudsql-celery/cluster.yaml
+++ b/hack/sample/cloudsql-celery/cluster.yaml
@@ -36,7 +36,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
   airflowbase:
     name: cc-base
diff --git a/hack/sample/cloudsql-k8s/cluster.yaml b/hack/sample/cloudsql-k8s/cluster.yaml
index 00f049a..494ee7e 100644
--- a/hack/sample/cloudsql-k8s/cluster.yaml
+++ b/hack/sample/cloudsql-k8s/cluster.yaml
@@ -30,7 +30,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
       branch: master
   airflowbase:
diff --git a/hack/sample/mysql-celery/cluster.yaml b/hack/sample/mysql-celery/cluster.yaml
index 1635f07..a44597b 100644
--- a/hack/sample/mysql-celery/cluster.yaml
+++ b/hack/sample/mysql-celery/cluster.yaml
@@ -39,7 +39,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
   airflowbase:
     name: mc-base
diff --git a/hack/sample/mysql-k8s/cluster.yaml b/hack/sample/mysql-k8s/cluster.yaml
index 02acdef..cf3d177 100644
--- a/hack/sample/mysql-k8s/cluster.yaml
+++ b/hack/sample/mysql-k8s/cluster.yaml
@@ -32,7 +32,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
       branch: master
   airflowbase:
diff --git a/hack/sample/postgres-celery-memorystore/cluster.yaml b/hack/sample/postgres-celery-memorystore/cluster.yaml
index e3558a8..0cbf89a 100644
--- a/hack/sample/postgres-celery-memorystore/cluster.yaml
+++ b/hack/sample/postgres-celery-memorystore/cluster.yaml
@@ -40,7 +40,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
   airflowbase:
     name: pc-base
diff --git a/hack/sample/postgres-celery-redis/cluster.yaml b/hack/sample/postgres-celery-redis/cluster.yaml
index 743f67b..e832b46 100644
--- a/hack/sample/postgres-celery-redis/cluster.yaml
+++ b/hack/sample/postgres-celery-redis/cluster.yaml
@@ -38,7 +38,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
   airflowbase:
     name: pc-base
diff --git a/hack/sample/postgres-celery/cluster.yaml b/hack/sample/postgres-celery/cluster.yaml
index 2218586..923786b 100644
--- a/hack/sample/postgres-celery/cluster.yaml
+++ b/hack/sample/postgres-celery/cluster.yaml
@@ -36,7 +36,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
   airflowbase:
     name: pc-base
diff --git a/hack/sample/postgres-k8s/cluster.yaml b/hack/sample/postgres-k8s/cluster.yaml
index 76099a0..a444106 100644
--- a/hack/sample/postgres-k8s/cluster.yaml
+++ b/hack/sample/postgres-k8s/cluster.yaml
@@ -30,7 +30,7 @@
   dags:
     subdir: "airflow/example_dags/"
     git:
-      repo: "https://github.com/apache/incubator-airflow/"
+      repo: "https://github.com/apache/airflow/"
       once: true
       branch: master
   airflowbase: