update headings

Author: fabriciojs

docs/01-Getting-Started/2-Installation.md

@@ -1,30 +1,30 @@
-## Installation
+# Installation
 
-### Requirements
+## Requirements
 
 **kool** is powered by **Docker**. To use **kool**, you need to **[install the Docker Engine and Docker Compose](https://docs.docker.com/get-docker/)** on your local machine, and make sure they're both running.
 
 Important to notice: `kool` relies on the `docker` and `docker compose` CLI commands - that being said, you can pick any other Docker-compatibable container engine and use it seamlessly, like OrbStack for example.
 
 > `kool` now requires [Docker Compose V2](https://docs.docker.com/compose/install/), make sure you have it enabled in your system.
 
-### For Linux and macOS
+## For Linux and macOS
 
 Install **kool** by running the following script. It will download the latest **kool** binary from [https://github.com/kool-dev/kool/releases](https://github.com/kool-dev/kool/releases), and save it in your `/usr/local/bin` folder.
 
 ```bash
 $ curl -fsSL https://kool.dev/install | bash
 ```
 
-### For Windows
+## For Windows
 
 You must run `kool` on Windows via [WSL - Windows Subsystem for Linux](https://learn.microsoft.com/en-us/windows/wsl/install) - once you have a WSL environment properly set up, make sure you have [Docker available on it](https://docs.docker.com/desktop/wsl/), then you can install the CLI as you would in any Linux or MacOS (see above).
 
 ### Verification
 
 Verify **kool** is installed correctly by running `kool` in your terminal to see a list of available commands.
 
-## Stay Up-to-Date
+# Stay Up-to-Date
 
 Update **kool** to a newer version using the `self-update` command. This command will compare your local version with the latest release, and, if a newer version is available, automatically download and install it.
 
@@ -34,11 +34,11 @@ $ kool self-update
 
 > Sign up for new release notifications and stay up-to-date on our latest features! [Go to our main GitHub repository](https://github.com/kool-dev/kool), click on "Watch" at the top, select the "Custom" option, check "Releases", and hit Apply.
 
-## Autocompletion
+# Autocompletion
 
 If you want to use **kool** autocompletion in your Unix shell, follow the appropriate instructions below.
 
-### Bash
+## Bash
 
 Temporarily enable autocompletion for your **current session only**:
 
@@ -62,7 +62,7 @@ $ kool completion bash > /usr/local/etc/bash_completion.d/kool
 
 > After running one of the above commands, remember to start a new shell for autocompletion to take effect.
 
-### Zsh
+## Zsh
 
 If Zsh tab completion is not already initialized on your machine, run the following command to turn it on.
 
@@ -78,7 +78,7 @@ $ kool completion zsh > "${fpath[1]}/_kool"
 
 > After running the above command, remember to start a new shell for autocompletion to take effect.
 
-### Fish
+## Fish
 
 Temporarily enable autocompletion for your **current session only**: