Added experiement link for coreDNS and Kafka experiment (#110)

Signed-off-by: Amit Bhatt <amitbhatt818@gmail.com>

charts/coredns/coredns-pod-delete/coredns-pod-delete.chartserviceversion.yaml

@@ -29,10 +29,8 @@ spec:
   provider:
     name: Mayadata
   links:
-    - name: CoreDNS Website
-      url: https://coredns.io
     - name: Source Code
-      url: https://github.com/coredns/coredns
-    - name: Docs
+      url: https://github.com/litmuschaos/litmus/tree/master/experiments/coredns/pod_delete
+    - name: Documentation
       url: https://docs.litmuschaos.io/docs/coredns-pod-delete/
   chaosexpcrdlink: https://raw.githubusercontent.com/litmuchaos/chaos-charts/master/charts/coredns/coredns-pod-delete/experiment.yaml

charts/kafka/kafka-broker-disk-failure/kafka-broker-disk-failure.chartserviceversion.yaml

@@ -26,11 +26,9 @@ spec:
   provider:
     name: Mayadata
   links:
-    - name: Kafka Website
-      url: http://kafka.apache.org/
     - name: Source Code
-      url: https://github.com/litmuschaos/litmus/tree/master/experiments/kafka
-    - name: Docs
+      url: https://github.com/litmuschaos/litmus/tree/master/experiments/kafka/kafka-broker-disk-failure
+    - name: Documentation
       url: https://docs.litmuschaos.io/docs/kafka-broker-disk-failure/
   icon:
     - url: 

charts/kafka/kafka-broker-pod-failure/kafka-broker-pod-failure.chartserviceversion.yaml

@@ -28,11 +28,9 @@ spec:
   provider:
     name: Mayadata
   links:
-    - name: Kafka Website
-      url: http://kafka.apache.org/
     - name: Source Code
-      url: https://github.com/litmuschaos/litmus/tree/master/experiments/kafka
-    - name: Docs 
+      url: https://github.com/litmuschaos/litmus/tree/master/experiments/kafka/kafka-broker-pod-failure
+    - name: Documentation
       url: https://docs.litmuschaos.io/docs/kafka-broker-pod-failure/
   icon:
     - url: