Update Ollama instructions (#22394)

docs/docs/integrations/providers/ollama.mdx

@@ -1,6 +1,6 @@
 # Ollama
 
->[Ollama](https://ollama.ai/) is a python library. It allows you to run open-source large language models, 
+>[Ollama](https://ollama.com/) allows you to run open-source large language models, 
 > such as LLaMA2, locally.
 >
 >`Ollama` bundles model weights, configuration, and data into a single package, defined by a Modelfile. 
@@ -12,11 +12,8 @@ on how to use `Ollama` with LangChain.
 
 ## Installation and Setup
 
-Follow [these instructions](https://github.com/jmorganca/ollama?tab=readme-ov-file#ollama)
+Follow [these instructions](https://github.com/ollama/ollama?tab=readme-ov-file#ollama)
 to set up and run a local Ollama instance.
-To use, you should set up the environment variables `ANYSCALE_API_BASE` and
-`ANYSCALE_API_KEY`.
-
 
 ## LLM