Update README and index documentation to clarify embedding generation with RubyLLM.embed

Author: crmne

README.md

@@ -110,7 +110,7 @@ response = chat.with_schema(ProductSchema).ask "Analyze this product", with: "pr
 * **Audio:** Transcribe and understand speech
 * **Documents:** Extract from PDFs, CSVs, JSON, any file type
 * **Image generation:** Create images with `RubyLLM.paint`
-* **Embeddings:** Vector search with `RubyLLM.embed`
+* **Embeddings:** Generate embeddings with `RubyLLM.embed`
 * **Moderation:** Content safety with `RubyLLM.moderate`
 * **Tools:** Let AI call your Ruby methods
 * **Structured output:** JSON schemas that just work

docs/index.md

@@ -171,7 +171,7 @@ response = chat.with_schema(ProductSchema).ask "Analyze this product", with: "pr
 * **Audio:** Transcribe and understand speech
 * **Documents:** Extract from PDFs, CSVs, JSON, any file type
 * **Image generation:** Create images with `RubyLLM.paint`
-* **Embeddings:** Vector search with `RubyLLM.embed`
+* **Embeddings:** Generate embeddings with `RubyLLM.embed`
 * **Moderation:** Content safety with `RubyLLM.moderate`
 * **Tools:** Let AI call your Ruby methods
 * **Structured output:** JSON schemas that just work