Fix markdown format (#12090)

examples/aws-asg/README.md

@@ -4,7 +4,7 @@ This example shows how to launch instances using Auto Scaling Groups.
 
 This creates a security group, launch configuration, auto scaling group and an ELB. The user data for launch configuration installs nginx and it listens on port 80.
 
-The example uses latest Ubuntu AMIs. 
+The example uses latest Ubuntu AMIs.
 
 Make sure you change the list of availability zones that is applicable to your account and region.
 
@@ -14,15 +14,19 @@ Running the example
 
 For planning phase 
 
-terraform plan -var 'key_name={your_key_name}}'
+```
+terraform plan -var 'key_name={your_key_name}'
+```
 
-For apply phase 
+For apply phase
 
-terraform apply -var 'key_name={your_key_name}}'
-
-Once the stack is created, wait for few minutes and test the stack by launching a browser with ELB url. 
+```
+terraform apply -var 'key_name={your_key_name}'
+```
+Once the stack is created, wait for few minutes and test the stack by launching a browser with ELB url.
 
 To remove the stack
 
- terraform destroy -var 'key_name={your_key_name}}'
-
+```
+ terraform destroy -var 'key_name={your_key_name}'
+```