Rephrase natural-language sampling example intro

Co-authored-by: Jonathan Hefner <[email protected]>

Author: LucaButBoring

docs/docs/concepts/sampling.mdx

@@ -167,7 +167,7 @@ Here are some examples of how servers can use sampling to enhance interactions:
 
 ### Natural-language tool responses
 
-The implementer of a server without direct LLM access may want a tool to return the result of an operation in natural language to aid clients:
+A tool without direct LLM access may want to perform an operation using natural language:
 
 ```typescript
 server.tool(