fix(#621): update config options and validator docs

Author: ben12

docs/docs/getting-started/config-options.mdx

@@ -106,10 +106,10 @@ translocoConfig({
 ```
 
 ### `interpolation`
-The start and end markings for parameters: (defaults to `['{{', '}}']`)
+The start and end markings for parameters and forbidden characters for parameter names: (defaults to `['{{', '}}', '{}']`)
 ```ts
 translocoConfig({
   // This will enable you to specify parameters as such: `"Hello <<<value>>>"`
-  interpolation: ['<<<', '>>>']
+  interpolation: ['<<<', '>>>', '<>']
 })
 ```

docs/docs/tools/validator.mdx

@@ -19,9 +19,20 @@ This package provides validation for translation files. It validates that the JS
     }
   },
   "lint-staged": {
-    "src/assets/i18n/*.json": ["transloco-validator"]
+    "src/assets/i18n/*.json": ["transloco-validator [options]"]
   }
 }
 ```
 
 This will make sure no one accidentally pushes an invalid translation file.
+
+
+### Options
+
+#### Interpolation forbidden characters for parameter names.
+
+- `--interpolationForbiddenChars`
+
+  `type`: `string`
+
+  `default`: `{}`