add deprecation warning to coder_git_auth

Author: matifali

docs/data-sources/git_auth.md

@@ -3,12 +3,17 @@
 page_title: "coder_git_auth Data Source - terraform-provider-coder"
 subcategory: ""
 description: |-
-  (Deprecated: use the coder_external_auth data source instead). Use this data source to require users to authenticate with a Git provider prior to workspace creation. This can be used to perform an authenticated git clone in startup scripts.
+  ~> Deprecated
+  Use the coder_external_auth data source instead.
+  Use this data source to require users to authenticate with a Git provider prior to workspace creation. This can be used to perform an authenticated git clone in startup scripts.
 ---
 
 # coder_git_auth (Data Source)
 
-(**Deprecated**: use the `coder_external_auth` data source instead). Use this data source to require users to authenticate with a Git provider prior to workspace creation. This can be used to perform an authenticated `git clone` in startup scripts.
+~> **Deprecated**
+Use the `coder_external_auth` data source instead.
+
+Use this data source to require users to authenticate with a Git provider prior to workspace creation. This can be used to perform an authenticated `git clone` in startup scripts.
 
 ## Example Usage
 

provider/gitauth.go

@@ -16,7 +16,7 @@ func gitAuthDataSource() *schema.Resource {
 		SchemaVersion: 1,
 
 		DeprecationMessage: "Use the `coder_external_auth` data source instead.",
-		Description:        "(**Deprecated**: use the `coder_external_auth` data source instead). Use this data source to require users to authenticate with a Git provider prior to workspace creation. This can be used to perform an authenticated `git clone` in startup scripts.",
+		Description:        "~> **Deprecated**\nUse the `coder_external_auth` data source instead.\n\nUse this data source to require users to authenticate with a Git provider prior to workspace creation. This can be used to perform an authenticated `git clone` in startup scripts.",
 		ReadContext: func(ctx context.Context, rd *schema.ResourceData, i interface{}) diag.Diagnostics {
 			rawID, ok := rd.GetOk("id")
 			if !ok {