docs: update README with optimal context values

README.md

@@ -116,7 +116,7 @@ my_config = RAGLiteConfig(
 my_config = RAGLiteConfig(
     db_url="sqlite:///raglite.sqlite",
     llm="llama-cpp-python/bartowski/Meta-Llama-3.1-8B-Instruct-GGUF/*Q4_K_M.gguf@8192",
-    embedder="llama-cpp-python/lm-kit/bge-m3-gguf/*F16.gguf@4096",
+    embedder="llama-cpp-python/lm-kit/bge-m3-gguf/*F16.gguf@1024",  # A context size of 1024 tokens is the sweet spot for bge-m3.
 )
 ```
 
@@ -281,7 +281,7 @@ You can specify the database URL, LLM, and embedder directly in the Chainlit fro
 raglite chainlit \
     --db_url sqlite:///raglite.sqlite \
     --llm llama-cpp-python/bartowski/Llama-3.2-3B-Instruct-GGUF/*Q4_K_M.gguf@4096 \
-    --embedder llama-cpp-python/lm-kit/bge-m3-gguf/*F16.gguf@4096
+    --embedder llama-cpp-python/lm-kit/bge-m3-gguf/*F16.gguf@1024
 ```
 
 To use an API-based LLM, make sure to include your credentials in a `.env` file or supply them inline: