feat: Better message on policy failure

Include the specific command `approve_policies` in the message.

server/controllers/events/testfixtures/test-repos/policy-checks-apply-reqs/exp-output-auto-policy-check.txt

@@ -10,6 +10,8 @@ FAIL - <redacted plan file> - main - WARNING: Null Resource creation is prohibit
 1 test, 0 passed, 0 warnings, 1 failure, 0 exceptions
 
 ```
-* :heavy_check_mark: To **approve** failing policies either request an approval from approvers or address the failure by modifying the codebase.
+* :heavy_check_mark: To **approve** failing policies an authorized approver can comment:
+    * `atlantis approve_policies`
+* :repeat: Or, address the policy failure by modifying the codebase and re-planning.
 
 

server/controllers/events/testfixtures/test-repos/policy-checks-diff-owner/exp-output-auto-policy-check.txt

@@ -10,6 +10,8 @@ FAIL - <redacted plan file> - main - WARNING: Null Resource creation is prohibit
 1 test, 0 passed, 0 warnings, 1 failure, 0 exceptions
 
 ```
-* :heavy_check_mark: To **approve** failing policies either request an approval from approvers or address the failure by modifying the codebase.
+* :heavy_check_mark: To **approve** failing policies an authorized approver can comment:
+    * `atlantis approve_policies`
+* :repeat: Or, address the policy failure by modifying the codebase and re-planning.
 
 

server/controllers/events/testfixtures/test-repos/policy-checks-extra-args/exp-output-auto-policy-check.txt

@@ -10,6 +10,8 @@ FAIL - <redacted plan file> - null_resource_policy - WARNING: Null Resource crea
 1 test, 0 passed, 0 warnings, 1 failure, 0 exceptions
 
 ```
-* :heavy_check_mark: To **approve** failing policies either request an approval from approvers or address the failure by modifying the codebase.
+* :heavy_check_mark: To **approve** failing policies an authorized approver can comment:
+    * `atlantis approve_policies`
+* :repeat: Or, address the policy failure by modifying the codebase and re-planning.
 
 

server/controllers/events/testfixtures/test-repos/policy-checks-multi-projects/exp-output-auto-policy-check.txt

@@ -30,7 +30,9 @@ FAIL - <redacted plan file> - main - WARNING: Forbidden Resource creation is pro
 1 test, 0 passed, 0 warnings, 1 failure, 0 exceptions
 
 ```
-* :heavy_check_mark: To **approve** failing policies either request an approval from approvers or address the failure by modifying the codebase.
+* :heavy_check_mark: To **approve** failing policies an authorized approver can comment:
+    * `atlantis approve_policies`
+* :repeat: Or, address the policy failure by modifying the codebase and re-planning.
 
 
 ---

server/controllers/events/testfixtures/test-repos/policy-checks/exp-output-auto-policy-check.txt

@@ -10,6 +10,8 @@ FAIL - <redacted plan file> - main - WARNING: Null Resource creation is prohibit
 1 test, 0 passed, 0 warnings, 1 failure, 0 exceptions
 
 ```
-* :heavy_check_mark: To **approve** failing policies either request an approval from approvers or address the failure by modifying the codebase.
+* :heavy_check_mark: To **approve** failing policies an authorized approver can comment:
+    * `atlantis approve_policies`
+* :repeat: Or, address the policy failure by modifying the codebase and re-planning.
 
 

server/events/markdown_renderer.go

@@ -371,8 +371,9 @@ var unwrappedErrTmplText = "**{{.Command}} Error**\n" +
 	"{{.Error}}\n" +
 	"```" +
 	"{{ if eq .Command \"Policy Check\" }}" +
-	"\n* :heavy_check_mark: To **approve** failing policies either request an approval from approvers or address the failure by modifying the codebase.\n" +
-	"{{ end }}"
+	"\n* :heavy_check_mark: To **approve** failing policies an authorized approver can comment:\n" +
+	"    * `atlantis approve_policies`\n" +
+	"* :repeat: Or, address the policy failure by modifying the codebase and re-planning.{{end}}"
 var wrappedErrTmplText = "**{{.Command}} Error**\n" +
 	"<details><summary>Show Output</summary>\n\n" +
 	"```\n" +