fix memory example in usage (#39)

Author: bwagner5

README.md

@@ -132,7 +132,7 @@ Usage:
 
 Examples:
 ec2-instance-selector --vcpus 4 --region us-east-2 --availability-zones us-east-2b
-ec2-instance-selector --memory-min 4096 --memory-max 8192 --vcpus-min 4 --vcpus-max 8 --region us-east-2
+ec2-instance-selector --memory-min 4 --memory-max 8 --vcpus-min 4 --vcpus-max 8 --region us-east-2
 
 Filter Flags:
       --allow-list string                 List of allowed instance types to select from w/ regex syntax (Example: m[3-5]\.*)

cmd/main.go

@@ -101,7 +101,7 @@ func main() {
 Filtering allows you to select all the instance types that match your application requirements.
 Full docs can be found at github.com/aws/amazon-` + binName
 	examples := fmt.Sprintf(`%s --vcpus 4 --region us-east-2 --availability-zones us-east-2b
-%s --memory-min 4096 --memory-max 8192 --vcpus-min 4 --vcpus-max 8 --region us-east-2`, binName, binName)
+%s --memory-min 4 --memory-max 8 --vcpus-min 4 --vcpus-max 8 --region us-east-2`, binName, binName)
 
 	runFunc := func(cmd *cobra.Command, args []string) {}
 	cli := commandline.New(binName, shortUsage, longUsage, examples, runFunc)