Doc updates (#696)

Signed-off-by: Prajyot-Parab <[email protected]>

Author: Prajyot-Parab

docs/book/src/topics/powervs/creating-a-cluster.md

@@ -50,7 +50,7 @@ following the steps below.
     --target-namespace default \
     --control-plane-machine-count=3 \
     --worker-machine-count=1 \
-    --from ./cluster-template-powervs.yaml | kubectl apply -f -
+    --flavor=powervs | kubectl apply -f -
     ```
 
     Output:

docs/book/src/topics/powervs/external-cloud-provider.md

@@ -25,7 +25,7 @@
   --target-namespace default \
   --control-plane-machine-count=3 \
   --worker-machine-count=1 \
-  --from ./cluster-template-powervs-cloud-provider.yaml | kubectl apply -f -
+  --flavor=powervs-cloud-provider | kubectl apply -f -
   ```
 
 When the cluster is created with above parameters, The IBM Power VS cloud provider will 

docs/book/src/topics/vpc/creating-a-cluster.md

@@ -18,8 +18,7 @@ following the steps below.
     clusterctl generate cluster ibm-vpc-0 --kubernetes-version v1.19.9 \
     --target-namespace default \
     --control-plane-machine-count=1 \
-    --worker-machine-count=2 \
-    --from ./templates/cluster-template.yaml | kubectl apply -f -
+    --worker-machine-count=2 | kubectl apply -f -
     ```
 
     Output:

templates/README.md

@@ -15,7 +15,7 @@ clusterctl generate cluster ibm-vpc-1 --kubernetes-version v1.14.3 \
 --target-namespace default \
 --control-plane-machine-count=1 \
 --worker-machine-count=2 \
---from ~/.cluster-api/dev-repository/infrastructure-ibmvpccloud/v0.3.8/cluster-template.yaml
+--from ./cluster-template.yaml
 ```
 
 ## Power VS