added link to llm caching pypi page and pip install link

Author: jeffvestal

supporting-blog-content/elasticsearch_llm_cache/README.md

@@ -2,7 +2,8 @@
 A Python library to utilize Elasticsearch as a caching layer for Generative AI applications. By caching the responses from Language Models (LLMs), this library helps in reducing costs associated with LLM services and improving response speed from the user's perspective.
 
 # pip install
-This library can not be installed via pip
+This library can now be installed via pip
+
 `pip install elasticsearch-llm-cache`
 
 [pypi library page](https://pypi.org/project/elasticsearch-llm-cache)