chore: update example templates to use display_name (#7001)

* add `display_name`

* fix typos and `terraform validate`

* update display_name

* Update examples/templates/aws-windows/main.tf

Co-authored-by: Ben Potter <me@bpmct.net>

* Update examples/templates/aws-linux/main.tf

Co-authored-by: Ben Potter <me@bpmct.net>

* Update examples/templates/azure-linux/main.tf

Co-authored-by: Ben Potter <me@bpmct.net>

* Update examples/templates/azure-linux/main.tf

Co-authored-by: Ben Potter <me@bpmct.net>

* Update examples/templates/do-linux/main.tf

Co-authored-by: Ben Potter <me@bpmct.net>

* Update examples/templates/do-linux/main.tf

Co-authored-by: Ben Potter <me@bpmct.net>

* Update main.tf

* Update main.tf

* Update main.tf

* Update main.tf

* Update main.tf

---------

Co-authored-by: Ben Potter <me@bpmct.net>

examples/templates/aws-linux/main.tf

@@ -108,7 +108,7 @@ data "coder_parameter" "region" {
 
 data "coder_parameter" "instance_type" {
   name         = "instance_type"
-  display_name = "Instance Type"
+  display_name = "Instance type"
   description  = "What instance type should your workspace use?"
   default      = "t3.micro"
   mutable      = false

examples/templates/aws-windows/main.tf

@@ -108,7 +108,7 @@ data "coder_parameter" "region" {
 
 data "coder_parameter" "instance_type" {
   name         = "instance_type"
-  display_name = "Instance Type"
+  display_name = "Instance type"
   description  = "What instance type should your workspace use?"
   default      = "t3.micro"
   mutable      = false

examples/templates/azure-linux/main.tf

@@ -152,7 +152,7 @@ data "coder_parameter" "location" {
 
 data "coder_parameter" "instance_type" {
   name         = "instance_type"
-  display_name = "Instance Type"
+  display_name = "Instance type"
   description  = "What instance type should your workspace use?"
   default      = "Standard_B4ms"
   icon         = "/icon/azure.png"
@@ -205,7 +205,7 @@ data "coder_parameter" "instance_type" {
 
 data "coder_parameter" "home_size" {
   name         = "home_size"
-  display_name = "Home Volume Size"
+  display_name = "Home volume size"
   description  = "How large would you like your home volume to be (in GB)?"
   default      = 20
   type         = "number"

examples/templates/do-linux/main.tf

@@ -53,7 +53,7 @@ variable "step2_do_admin_ssh_key" {
 
 data "coder_parameter" "droplet_image" {
   name         = "droplet_image"
-  display_name = "Droplet Image"
+  display_name = "Droplet image"
   description  = "Which Droplet image would you like to use?"
   default      = "ubuntu-22-04-x64"
   type         = "string"
@@ -112,7 +112,7 @@ data "coder_parameter" "droplet_image" {
 
 data "coder_parameter" "droplet_size" {
   name         = "droplet_size"
-  display_name = "Droplet Size"
+  display_name = "Droplet size"
   description  = "Which Droplet configuration would you like to use?"
   default      = "s-1vcpu-1gb"
   type         = "string"
@@ -147,7 +147,7 @@ data "coder_parameter" "droplet_size" {
 
 data "coder_parameter" "home_volume_size" {
   name         = "home_volume_size"
-  display_name = "Home Volume Size"
+  display_name = "Home volume size"
   description  = "How large would you like your home volume to be (in GB)?"
   type         = "number"
   default      = "20"

examples/templates/docker-with-dotfiles/main.tf

@@ -29,7 +29,7 @@ data "coder_workspace" "me" {
 
 data "coder_parameter" "docker_image" {
   name         = "docker_image"
-  display_name = "Docker Image"
+  display_name = "Docker image"
   description  = "The Docker image will be used to build your workspace."
   default      = "codercom/enterprise-base:ubuntu"
   icon         = "/icon/docker.png"

examples/templates/fly-docker-image/main.tf

@@ -109,7 +109,7 @@ EOF
 
 data "coder_parameter" "docker-image" {
   name         = "docker-image"
-  display_name = "Docker Image"
+  display_name = "Docker image"
   description  = "The docker image to use for the workspace"
   default      = "codercom/code-server:latest"
   icon         = "https://raw.githubusercontent.com/matifali/logos/main/docker.svg"
@@ -131,7 +131,7 @@ data "coder_parameter" "cpu" {
 
 data "coder_parameter" "cputype" {
   name         = "cputype"
-  display_name = "CPU Type"
+  display_name = "CPU type"
   description  = "Which CPU type do you want?"
   default      = "shared"
   icon         = "https://raw.githubusercontent.com/matifali/logos/main/cpu-1.svg"
@@ -162,7 +162,7 @@ data "coder_parameter" "memory" {
 
 data "coder_parameter" "volume-size" {
   name         = "volume-size"
-  display_name = "Home Volume Size"
+  display_name = "Home volume size"
   description  = "The size of the volume to create for the workspace in GB (1-20)"
   type         = "number"
   default      = "1"

examples/templates/kubernetes/main.tf

@@ -86,7 +86,7 @@ data "coder_parameter" "memory" {
 
 data "coder_parameter" "home_disk_size" {
   name         = "home_disk_size"
-  display_name = "Home Disk Size"
+  display_name = "Home disk size"
   description  = "The size of the home disk in GB"
   default      = "10"
   type         = "number"