Adds satisfies to the jsdoc reference (#2914)

packages/documentation/copy/en/javascript/JSDoc Reference.md

@@ -19,6 +19,8 @@ Note any tags which are not explicitly listed below (such as `@async`) are not y
 - [`@typedef`](#typedef-callback-and-param)
 - [`@callback`](#typedef-callback-and-param)
 - [`@template`](#template)
+- [`@satisfies`](#satisfies)
+
 
 #### Classes
 
@@ -397,6 +399,29 @@ class Cache {
 let c = new Cache()
 ```
 
+### `@satisfies`
+
+`@satisfies` provides access to the postfix [operator `satisfies`](/docs/handbook/release-notes/typescript-4-9.html) in TypeScript. Satisfies is used to declare that a value implements a type but does not affect the type of the value. 
+
+```js twoslash
+// @errors: 1360
+/**
+ * @typedef {"hello world" | "Hello, world"} WelcomeMessage
+ */
+
+/** @satisfies {WelcomeMessage} */
+const message = "hello world"
+//     ^?
+
+/** @satisfies {WelcomeMessage} */
+const failingMessage = "Hello world!"
+
+/** @type {WelcomeMessage} */
+const messageUsingType = "hello world"
+//     ^?
+```
+
+
 ## Classes
 
 Classes can be declared as ES6 classes.