Improve README.md

README.md

@@ -1,10 +1,10 @@
-# TravelNet
+# Travelnet
 
 [![luacheck](https://github.com/mt-mods/travelnet/workflows/luacheck/badge.svg)](https://github.com/mt-mods/travelnet/actions?query=workflow%3Aluacheck)
 [![Integration test](https://github.com/mt-mods/travelnet/workflows/integration-test/badge.svg)](https://github.com/mt-mods/travelnet/actions?query=workflow%3Aintegration-test)
 [![ContentDB](https://content.minetest.net/packages/mt-mods/travelnet/shields/downloads/)](https://content.minetest.net/packages/mt-mods/travelnet/)
 
-# How this works
+## How this works
 
 - craft it by filling the right and left row with glass; place in the middle row (from top to bottom): steel, mese, steel
 - place the travelnet box somewhere
@@ -15,24 +15,24 @@
 An unconfigured travelnet box can be configured by anyone. If it is misconfigured, just dig it and place it anew.
 All stations that have the same network name set and are owned by the same user connect to the same network.
 
-# Documentation
+## Documentation
 
 * [API](./doc/api.md)
 
-# Screenshots
+## Screenshots
 
 <img src="./screenshot.png"/>
 <img src="./screenshot_colors.png"/>
 
-# License
+## License
 
 The mod was written by me, Sokomine, and includes small contributions from other contributors.
-License: GPLv3 (see file LICENSE)
+License: GPLv3 (see [`LICENSE`](https://github.com/mt-mods/travelnet/blob/master/LICENSE) for more information)
 
 The models and textures as found in the textures/ and models/ folders where created by VanessaE
-and are provided under the CC0 license.
+and are provided under the [CC0](https://creativecommons.org/publicdomain/zero/1.0/) license.
 
 Exceptions:
 
-* `textures/travelnet_top.png` CC BY-SA 3.0 https://github.com/minetest/minetest_game (default_steel_block.png)
-* `textures/travelnet_bottom.png` CC BY-SA 3.0 https://github.com/minetest/minetest_game (default_clay.png)
+* `textures/travelnet_top.png` [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) https://github.com/minetest/minetest_game (`default_steel_block.png`)
+* `textures/travelnet_bottom.png` [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) https://github.com/minetest/minetest_game (`default_clay.png`)