README: use inline links

It seems gitea doesn't like number references in markdown.

README.md

@@ -2,9 +2,9 @@
 
 ### Simple declarative and reproducible coreboot images
 
-This repository contains a minimal interface to build coreboot images using Nix.
-Coreboot is already near 100% binary reproducible and can be configured via
-[Kconfig](https://doc.coreboot.org/getting_started/kconfig.html); however
+This repository contains a minimal interface to build coreboot images using
+Nix. Coreboot is already near 100% binary reproducible and can be configured
+via [Kconfig](https://doc.coreboot.org/getting_started/kconfig.html); however
 the process is somewhat involved: it requires maintaining a local checkout of
 the coreboot source, several config files and shell scripts. Nixboot automates
 this process and allows to control it declaratively from a single file.
@@ -24,9 +24,9 @@ Other payloads (including secondaries) can be very easily added.
 
 ### 1. Fetching sources
 
-Go to the board [status page](1) and find the latest tested revision for your
-mainboard, or pick one yourself. Next, to fetch all the source archives needed
-to build coreboot, run:
+Go to the board [status page](https://coreboot.org/status/board-status.html)
+and find the latest tested revision for your mainboard, or pick one yourself.
+Next, to fetch all the source archives needed to build coreboot, run:
 
     scripts/gen-sources.sh REV > sources.nix
 
@@ -38,7 +38,7 @@ build its own compiler toolchain from source.
 ### 2. Configuring
 
 Once the `sources.nix` has been generated, to configure coreboot and the
-payload, write a `board.nix`, like:
+payload, write a `board.nix`, like this one:
 ```
 { pkgs ? import <nixpkgs> { } }:
 
@@ -75,9 +75,10 @@ pkgs.callPackage ./coreboot.nix {
 
 }
 ```
-The configuration options can be found on the coreboot [website](2). The names
-are case-insensitive and options with the same prefix (for example `PCIEXP_`)
-can be conveniently grouped into a set.
+The configuration options can be found on the coreboot
+[website](https://coreboot.org/status/kconfig-options.html). The names are
+case-insensitive and options with the same prefix (for example `PCIEXP_`) can
+be conveniently grouped into a set.
 
 Valid option values includes:
 
@@ -87,8 +88,8 @@ Valid option values includes:
   - paths (will be copied into the Nix store)
   - derivations (will be converted to store paths)
 
-[1]: https://coreboot.org/status/board-status.html
-[2]: https://coreboot.org/status/kconfig-options.html
+
+
 
 
 ### 3. Building
@@ -97,18 +98,16 @@ Simply run
 
     nix build -f board.nix coreboot
 
-This will build the toolchain,
-the full configuration and use them to build coreboot itself. The output
-consist of:
+This will build the toolchain, the full configuration and use them to build
+coreboot itself. The output consist of:
 
     result/
     ├── config
     ├── coreboot.rom
     └── defconfig
 
-where `config` contains the full coreboot configuration, `defconfig` only
-the non-default ones and `coreboot.rom` is the final image, ready to be
-flashed.
+where `config` contains the full coreboot configuration, `defconfig` only the
+non-default ones and `coreboot.rom` is the final image, ready to be flashed.
 
 It's also possible to only build the toolchain using the `toolchain` attribute
 and see the defconfig before building with `defConfig`.