docs: format fixes

Author: xrissoula

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

@@ -111,7 +111,6 @@ This means the Polykey agent is already running. To manage this, you can:
 
 ```shell
 polykey agent status
-
 ```
 
 Stop the running agent:
@@ -311,7 +310,6 @@ This means the Polykey agent is already running. To manage this, you can:
 
 ```shell
 polykey agent status
-
 ```
 
 Stop the running agent:
@@ -346,7 +344,7 @@ This is not the path: `~/Downloads/polykey`. This is the correct path:
 :::
 
 ```shell
- 'export PATH=~/Downloads:$PATH >> ~/.zshrc && source ~/.zshrc
+ export PATH=~/Downloads:$PATH >> ~/.zshrc && source ~/.zshrc
 ```
 
 </TabItem>
@@ -504,7 +502,6 @@ This means the Polykey agent is already running. To manage this, you can:
 
 ```shell
 polykey agent status
-
 ```
 
 Stop the running agent: