fix: make top-level headings

docs/abra/hack.md

@@ -20,7 +20,7 @@ Our [Drone CI configuration](https://git.coopcloud.tech/coop-cloud/abra/src/bran
 
 Please use the [conventional commit format](https://www.conventionalcommits.org/en/v1.0.0/) for your commits so we can automate our change log.
 
-### `abra` integration tests
+## `abra` integration tests
 
 We use [`bats`](https://bats-core.readthedocs.io/en/stable/), you can install
 the required dependencies with the following. You also need a working
@@ -40,7 +40,7 @@ bats tests/integration --timing --pretty
 You can use `--filter <name>` to run specific tests. Or pass the filename to
 run all tests from a specific file.
 
-### Using the `abra` public API
+## Using the `abra` public API
 
 Warning, there is currently no stability promise for the `abra` public API! Most of the internals are exposed in order to allow a free hand for developers to try build stuff. If people start to build things then we can start the discussion on what is useful to have open/closed and keep stable etc. Please let us know if you depend on the APIs!
 
@@ -81,7 +81,7 @@ Some tools that are making use of the API so far are:
 
 * [`kadabra`](https://git.coopcloud.tech/coop-cloud/abra/src/branch/main/cmd/kadabra/main.go)
 
-### Cross-compiling
+## Cross-compiling
 
 If there's no official release for the architecture you use, you can cross-compile `abra` very easily. Clone the source code from [here](https://git.coopcloud.tech/coop-cloud/abra) and then:
 
@@ -90,7 +90,7 @@ If there's no official release for the architecture you use, you can cross-compi
 - run `git checkout <tag>`, where `<tag>` is the latest version
 - run `GOOS=<os> GOARCH=<arch> [GOARM=<arm>] make build`. You only have to use `GOARM` if you're building for ARM, this specifies the ARM version (5,6,7 etc). See [this](https://go.dev/doc/install/source#environment) for a list of all supported OS'es and architectures.
 
-### Building in Docker
+## Building in Docker
 
 If you are living under a curse of constant Go environment problems, it might be easier to build `abra` using Docker: