docs: format installation.md with Prettier

Author: xrissoula

docs/Getting-Started/polykey-cli/installation.md

@@ -68,14 +68,14 @@ your `PATH`. You can either:
 
 **Temporary (until terminal closes):**
 
-```sh
+````sh
 export PATH="$PWD:$PATH"
 
 4. Confirm the installation:
 
    ```sh
    polykey --version
-```
+````
 
 5. If it returns the version, you’re ready to use the CLI.
 
@@ -119,7 +119,7 @@ already be running
 This means the Polykey agent is already running. To manage this, you can:
 
 **Check the agent status**:
-pm 
+
 ```shell
 polykey agent status
 ```