fix ollama download link

fix #10

Author: copdips

docs/posts/2025/2025-03-07-installing-ollama-without-root.md

@@ -16,9 +16,9 @@ Inspired by [the official guide](https://github.com/ollama/ollama/blob/main/docs
 ```bash
 mkdir -p ~/src
 cd ~/src
-curl -L https://ollama.com/download/ollama-linux-amd64.tgz -o ollama-linux-amd64.tgz
+curl -L https://ollama.com/download/ollama-linux-amd64.tar.zst -o ollama-linux-amd64.tar.zst
 mkdir -p ~/opt/ollama
-tar -C ~/opt/ollama -xzf ollama-linux-amd64.tgz
+tar -C ~/opt/ollama -xzf ollama-linux-amd64.tar.zst
 ```
 
 Add Ollama to $PATH: