fix Ollama homepage

Signed-off-by: fria <[email protected]>

docs/ai-chat.md

@@ -101,7 +101,7 @@ Ollama is a command-line AI assistant that is available on macOS, Linux, and Win
 
 In addition to supporting a wide range of text models, Ollama also supports [LLaVA](https://github.com/haotian-liu/LLaVA) models and has experimental support for Meta's [Llama vision capabilities](https://huggingface.co/blog/llama32#what-is-llama-32-vision).
 
-[:octicons-home-16: Homepage](https://github.com/ollama/ollama){ .md-button .md-button--primary }
+[:octicons-home-16: Homepage](https://ollama.com){ .md-button .md-button--primary }
 [:octicons-info-16:](https://github.com/ollama/ollama#readme){ .card-link title="Documentation" }
 [:octicons-code-16:](https://github.com/ollama/ollama){ .card-link title="Source Code" }