fix(docs): correct config formating in terraform examples (#7219)

Author: vvagaytsev

docs/reference/action-types/Deploy/terraform.md

@@ -376,7 +376,8 @@ Example:
 spec:
   ...
   backendConfig:
-      "bucket: ${environment.name\\}-bucket\nkey: tf-state/${local.username\\}/terraform.tfstate"
+      bucket: ${environment.name}-bucket
+      key: tf-state/${local.username}/terraform.tfstate
 ```
 
 

docs/reference/module-types/terraform.md

@@ -591,7 +591,8 @@ Example:
 
 ```yaml
 backendConfig:
-    "bucket: ${environment.name\\}-bucket\nkey: tf-state/${local.username\\}/terraform.tfstate"
+    bucket: ${environment.name}-bucket
+    key: tf-state/${local.username}/terraform.tfstate
 ```
 
 

docs/reference/providers/terraform.md

@@ -226,7 +226,8 @@ Example:
 ```yaml
 providers:
   - backendConfig:
-        "bucket: ${environment.name\\}-bucket\nkey: tf-state/${local.username\\}/terraform.tfstate"
+        bucket: ${environment.name}-bucket
+        key: tf-state/${local.username}/terraform.tfstate
 ```
 
 

plugins/terraform/src/helpers.ts

@@ -45,10 +45,11 @@ export const terraformBackendConfigSchema = () =>
 
         If Garden sees that the backend has changes, it'll re-initialize Terraform and set the new values.
       `
-    ).example(dedent`
-      bucket: \$\{environment.name\}-bucket
-      key: tf-state/\$\{local.username\}/terraform.tfstate
-    `)
+    )
+    .example({
+      bucket: "${environment.name}-bucket",
+      key: "tf-state/${local.username}/terraform.tfstate",
+    })
 
 export const variablesSchema = () => joiStringMap(joi.any())