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docs/docs/concepts.mdx

@@ -87,7 +87,7 @@ With LCEL, **all** steps are automatically logged to [LangSmith](/docs/langsmith
 [**Seamless LangServe deployment**](/docs/langserve)
 Any chain created with LCEL can be easily deployed using [LangServe](/docs/langserve).
 
-### Runnable Interface
+### Runnable interface
 
 To make it as easy as possible to create custom chains, we've implemented a ["Runnable"](https://api.python.langchain.com/en/stable/runnables/langchain_core.runnables.base.Runnable.html#langchain_core.runnables.base.Runnable) protocol. Many LangChain components implement the `Runnable` protocol, including chat models, LLMs, output parsers, retrievers, prompt templates, and more. There are also several useful primitives for working with runnables, which you can read about below.
 
@@ -462,7 +462,7 @@ In order to assist in this we have put together a [transition guide on how to do
 
 ## Techniques
 
-### Function/Tool Calling
+### Function/tool calling
 
 :::info
 We use the term tool calling interchangeably with function calling. Although