docs(templates): add edit templates section (#4754)

* docs(templates): add edit templates section

* minor changes

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

docs/templates.md

@@ -22,7 +22,7 @@ coder templates init
 vim <template-name>/main.tf
 
 # add the template to Coder deployment
-coder templates <create/update> <template-name>
+coder templates create <template-name>
 ```
 
 > See the documentation and source code for each example in the
@@ -220,6 +220,32 @@ resource "kubernetes_pod" "podName" {
 }
 ```
 
+### Edit templates
+
+You can delete a template using the coder CLI. Only
+[template admins and owners](./admin/users.md) can edit a template.
+
+Using the CLI, login to Coder and run the following command to delete a template:
+
+```sh
+coder templates pull <template-name> file.tar.gz
+```
+
+This will pull down the template as a gzipped file to your current directory. Then unzip
+it by running:
+
+```sh
+tar -xf file.tar.gz
+```
+
+Make the changes to your template then run this command from the root of the template folder:
+
+```sh
+coder templates push <template-name>
+```
+
+Your updated template will now be available. Outdated workspaces will have a prompt in the dashboard to update.
+
 ### Delete templates
 
 You can delete a template using both the coder CLI and UI. Only