Update Rerank documentation

Author: infinityrobot

docs/guides/rerank.md

@@ -9,7 +9,7 @@ permalink: /guides/rerank
 # Reranking
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-Reranking improves search relevancy by reassessing and reordering retrieved documents based on their relevance to a specific query. This is particularly useful for optimizing Retrieval Augmented Generation (RAG) pipelines and enterprise search applications.
+Reranking is a standard step in retrieval-augmented generation (RAG) pipelines that bridges retrieval and generation workflows, improving search relevancy by reassessing and reordering retrieved documents based on their relevance to a specific query. This is particularly useful for optimizing RAG pipelines and enterprise search applications.
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 ## Table of contents