fix types and add text to templates index

website/content/docs/templates/index.mdx

@@ -1,6 +1,6 @@
 ---
 description: |
-  This section describes the configruation language used to create Packer
+  This section describes the configuration language used to create Packer
   templates.
 page_title: Templates
 ---
@@ -9,7 +9,7 @@ page_title: Templates
 
 Packer's behavior is determined by the Packer template, which consists of a
 series of declarations and commands for Packer to follow. This template tells
-Packer what plugins (builders, provisioners, post-proecssors) to use, how to
+Packer what plugins (builders, provisioners, post-processors) to use, how to
 configure each of those plugins, and what order to run them in.
 
 The template contains flexible variable injection tools, as well as built-in
@@ -24,5 +24,8 @@ new features in the Packer core will only be implemented for the newer HCL
 format. Please use the side bar to find documentation for the different
 template formats.
 
+From version **1.7.0**, HCL2 becomes officially the preferred way to write Packer
+configuration(s).
+
 If you need help upgrading a JSON template to an HCL template, check
 our upgrade guide [here](/guides/hcl/from-json-v1).