docs: update Angular Signals reactivity comparison (#2702)

Author: lukasmatta

src/guide/extras/reactivity-in-depth.md

@@ -403,7 +403,7 @@ export function useMachine(options) {
 Quite a few other frameworks have introduced reactivity primitives similar to refs from Vue's Composition API, under the term "signals":
 
 - [Solid Signals](https://www.solidjs.com/docs/latest/api#createsignal)
-- [Angular Signals](https://github.com/angular/angular/discussions/49090)
+- [Angular Signals](https://angular.io/guide/signals)
 - [Preact Signals](https://preactjs.com/guide/v10/signals/)
 - [Qwik Signals](https://qwik.builder.io/docs/components/state/#usesignal)
 
@@ -454,18 +454,12 @@ const count = signal(0)
 count() // access the value
 count.set(1) // set new value
 count.update((v) => v + 1) // update based on previous value
-
-// mutate deep objects with same identity
-const state = signal({ count: 0 })
-state.mutate((o) => {
-  o.count++
-})
 ```
 
 Again, we can easily replicate the API in Vue:
 
 ```js
-import { shallowRef, triggerRef } from 'vue'
+import { shallowRef } from 'vue'
 
 export function signal(initialValue) {
   const r = shallowRef(initialValue)
@@ -476,15 +470,11 @@ export function signal(initialValue) {
   s.update = (updater) => {
     r.value = updater(r.value)
   }
-  s.mutate = (mutator) => {
-    mutator(r.value)
-    triggerRef(r)
-  }
   return s
 }
 ```
 
-[Try it in the Playground](https://play.vuejs.org/#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)
+[Try it in the Playground](https://play.vuejs.org/#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)
 
 Compared to Vue refs, Solid and Angular's getter-based API style provide some interesting trade-offs when used in Vue components: