docs: add embedding model docs

README.md

@@ -81,14 +81,14 @@ You can use the following optional settings to customize:
 - **temperature** `number` (default: `0.8`)
 - **topK** `number` (default: `3`)
 
-## Embedding models
+## ⭐️ Embedding models
 
 ```ts
 import { chromeai } from 'chrome-ai';
 import { embedMany, cosineSimilarity } from 'ai';
 
 const { embeddings } = await embedMany({
-  model: chromeai.embedding(),
+  model: chromeai('embedding'),
   values: ['sunny day at the beach', 'rainy afternoon in the city'],
 });
 // [[1.9545, 0.0318...], [1.8015, 0.1504...]]