Update Docs: resource_key example

Author: kavya498

website/docs/r/resource_instance.html.markdown

@@ -25,10 +25,6 @@ resource "ibm_resource_instance" "resource_instance" {
   resource_group_id = data.ibm_resource_group.group.id
   tags              = ["tag1", "tag2"]
 
-  parameters = {
-    "HMAC" = true
-  }
-
   //User can increase timeouts
   timeouts {
     create = "15m"

website/docs/r/resource_key.html.markdown

@@ -58,6 +58,35 @@ resource "ibm_resource_key" "resourceKey" {
     delete = "15m"
   }
 }
+```
+## Example Usage with HMAC 
+
+```hcl
+data "ibm_resource_group" "group" {
+    name ="Default"
+}
+resource "ibm_resource_instance" "resource_instance" {
+  name              = "test-21"
+  service           = "cloud-object-storage"
+  plan              = "lite"
+  location          = "global"
+  resource_group_id = data.ibm_resource_group.group.id
+  tags              = ["tag1", "tag2"]
+  
+  //User can increase timeouts
+  timeouts {
+    create = "15m"
+    update = "15m"
+    delete = "15m"
+  }
+}
+resource "ibm_resource_key" "resourceKey" {
+  name                 = "my-cos-bucket-xx-key"
+  resource_instance_id = ibm_resource_instance.resource_instance.id
+  parameters           = { "HMAC" = true }
+  role                 = "Manager"
+}
+
 ```
 
 ## Timeouts