docs/hcl2: Update HCL2 beta note link (#9258)

This change updates the Beta notes on the Packer docs site with a link
to the pinned HCL2 implementations list issue.

Closes #9175

website/pages/docs/from-1.5/expressions.mdx

@@ -10,7 +10,9 @@ description: |-
 # Expressions
 
 -> **Note:** This page is about HCL2 in Packer 1.5 and later. HCL2 support for
-Packer is still in Beta. For the old-style stable configuration language see
+Packer is still in Beta. Please see the [Packer Issue
+Tracker](https://github.com/hashicorp/packer/issues/9176) for a list of
+supported features. For the old-style stable configuration language see
 [template docs](/docs/templates).
 
 _Expressions_ are used to refer to or compute values within a configuration.

website/pages/docs/from-1.5/index.mdx

@@ -11,7 +11,9 @@ description: |-
 # HCL Configuration Language
 
 -> **Note:** This page is about HCL2 in Packer 1.5 and later. HCL2 support for
-Packer is still in Beta. For the old-style stable configuration language see
+Packer is still in Beta. Please see the [Packer Issue
+Tracker](https://github.com/hashicorp/packer/issues/9176) for a list of
+supported features. For the old-style stable configuration language see
 [template docs](/docs/templates).
 
 Packer uses the Hashicorp Configuration Language - HCL - designed to allow

website/pages/docs/from-1.5/locals.mdx

@@ -10,7 +10,9 @@ description: >-
 # Local Values
 
 -> **Note:** This page is about HCL2 in Packer 1.5 and later. HCL2 support for
-Packer is still in Beta. For the old-style stable configuration language see
+Packer is still in Beta. Please see the [Packer Issue
+Tracker](https://github.com/hashicorp/packer/issues/9176) for a list of
+supported features. For the old-style stable configuration language see
 [template docs](/docs/templates).
 
 Local values assign a name to an expression, that can then be used multiple

website/pages/docs/from-1.5/syntax.mdx

@@ -11,7 +11,9 @@ description: |-
 # HCL Configuration Syntax
 
 -> **Note:** This page is about HCL2 in Packer 1.5 and later. HCL2 support for
-Packer is still in Beta. For the old-style stable configuration language see
+Packer is still in Beta. Please see the [Packer Issue
+Tracker](https://github.com/hashicorp/packer/issues/9176) for a list of
+supported features. For the old-style stable configuration language see
 [template docs](/docs/templates).
 
 Other pages in this section have described various configuration constructs

website/pages/docs/from-1.5/variables.mdx

@@ -10,7 +10,9 @@ description: |-
 # Input Variables
 
 -> **Note:** This page is about HCL2 in Packer 1.5 and later. HCL2 support for
-Packer is still in Beta. For the old-style stable configuration language see
+Packer is still in Beta. Please see the [Packer Issue
+Tracker](https://github.com/hashicorp/packer/issues/9176) for a list of
+supported features. For the old-style stable configuration language see
 [template docs](/docs/templates).
 
 Input variables serve as parameters for a Packer build, allowing aspects of the

website/pages/partials/guides/hcl2-beta-note.mdx

@@ -1 +1 @@
-~> Support for HCL2 is currently in Beta, which means the feature you are looking for may still need some polishing. If you find problems, please check the list of open and resolved HCL2 issues on the [Packer Issue Tracker](https://github.com/hashicorp/packer/issues?q=is%3Aissue+is%3Aopen+label%3Ahcl2). For any strange behavior not already captured please create a new issue so that we can fix it!
+~> Support for HCL2 is currently in Beta, which means the feature you are looking for may still need some polishing. If you find problems, please check the [Packer Issue Tracker](https://github.com/hashicorp/packer/issues/9176) for a list of supported features and open issues. For any strange behavior not already captured please create a new issue so that we can fix it!