[Word] Enhance insertAnnotations API documentation (#5125)

* Add docs for insertAnnotations API

* Fix metadata and link issues for Learn validation

* Fix metadata and link issues for Learn validation

* Fix: correct ms.date format and replace invalid link in insertAnnotations.md

* Add insertAnnotations usage guide to Word docs

* Adding Return Section for the InsertAnnotation

Author: abdulhadi-jarad

docs/word/insertAnnotations.md

@@ -0,0 +1,115 @@
+---
+title: insertAnnotations method (Word JavaScript API)
+description: Adds ephemeral critique annotations (such as grammar underlines) to a paragraph in Word using Office.js.
+ms.date: 04/22/2025
+ms.topic: reference
+---
+
+# insertAnnotations (Word JavaScript API)
+
+> [!NOTE]
+> This API is part of the `AnnotationSet` feature in Word JavaScript API and is designed for applying non-persistent, UI-focused annotations. This page provides developer-focused usage, behavior notes, and real-world examples for use in Word add-ins.
+
+## Summary
+
+The `insertAnnotations` method allows developers to programmatically apply ephemeral critique annotations to a Word paragraph. These annotations appear as grammar-style underlines with contextual tooltips and are:
+
+- **Non-destructive**: They don’t modify the document content.
+- **Ephemeral**: They disappear once the document is closed or reloaded.
+- **UI-oriented**: Ideal for grammar checkers, intelligent suggestions, and contextual UI.
+
+## Syntax
+
+```javascript
+paragraph.insertAnnotations({
+  critiques: [
+    {
+      start: number,
+      length: number,
+      colorScheme: Word.CritiqueColorScheme.red,
+      popupOptions: {
+        titleResourceId: string,
+        subtitleResourceId: string,
+        brandingTextResourceId: string,
+        suggestions: string[]
+      }
+    }
+  ]
+});
+```
+
+## Parameters
+
+| Property        | Type                            | Description |
+|-----------------|----------------------------------|-------------|
+| `start`         | `number`                         | Start index (character offset) within the paragraph text where the critique should begin. |
+| `length`        | `number`                         | Number of characters the critique annotation should cover. |
+| `colorScheme`   | `Word.CritiqueColorScheme`       | Specifies the color of the underline (e.g., `red`, `green`, `blue`). |
+| `popupOptions`  | `object`                         | Metadata for the annotation’s tooltip. See below for its properties. |
+
+### `popupOptions` properties
+
+| Property                   | Type     | Description |
+|----------------------------|----------|-------------|
+| `titleResourceId`          | `string` | Resource ID for the tooltip title. |
+| `subtitleResourceId`       | `string` | Resource ID for the tooltip subtitle. |
+| `brandingTextResourceId`   | `string` | Resource ID for the tooltip's branding or footer text. |
+| `suggestions`              | `string[]` | A list of suggested alternative texts shown in the tooltip. |
+
+## Returns
+
+Returns a `ClientResult<string[]>` object containing the list of unique annotation IDs created.
+
+You must call `await context.sync()` before accessing the `.value` property to retrieve the IDs:
+
+```javascript
+const annotationIds = paragraph.insertAnnotations(annotationSet);
+await context.sync();
+console.log("Inserted annotation IDs:", annotationIds.value); // Example: ["id1", "id2"]
+```
+
+These IDs can be used with other annotation APIs, such as `getAnnotationById()`.
+
+## Example
+
+```javascript
+await Word.run(async (context) => {
+  const paragraph = context.document.getSelection().paragraphs.getFirst();
+
+  const popupOptions = {
+    brandingTextResourceId: "Demo.Branding",
+    titleResourceId: "Demo.Title",
+    subtitleResourceId: "Demo.Subtitle",
+    suggestions: ["suggestion 1", "suggestion 2"]
+  };
+
+  const annotationSet = {
+    critiques: [
+      {
+        start: 0,
+        length: 4,
+        colorScheme: Word.CritiqueColorScheme.red,
+        popupOptions
+      }
+    ]
+  };
+
+  const annotationIds = paragraph.insertAnnotations(annotationSet);
+  await context.sync();
+
+  console.log("Inserted annotation IDs:", annotationIds.value);
+});
+```
+
+## Notes
+
+- Annotations are **in-memory only** and do **not persist** in the `.docx` file.
+- They are **removed** when the document is closed or reloaded.
+- Useful for **real-time UI enhancements** (e.g., spelling/grammar checkers, writing suggestions).
+- Use returned IDs to manage critiques (e.g., retrieve or delete specific annotations).
+
+## Related Links
+
+- [AnnotationSet](https://learn.microsoft.com/javascript/api/word/word.annotationset)
+- [getAnnotationById()](https://learn.microsoft.com/javascript/api/word/word.document?view=word-js-preview#word-document-getannotationbyidid)
+- [setAnnotation()](https://learn.microsoft.com/javascript/api/word/word.range?view=word-js-preview#setannotationoptions-)