docs: update documentations

CONTRIBUTING.md

@@ -15,7 +15,7 @@ These directories aren't git repositories in the traditional sense:
     - If it says something like `212 commits ahead, 207 commits behind`, then type `git fetch` to update 
 
 ## Adding Patches
-Adding patches to  is very simple:
+Adding patches is very simple:
 
 1. Make changes
 2. `cd` into the directory you want to add a patch to

README.md

@@ -1,13 +1,17 @@
 # ScalableLux
 A Fabric mod based on Starlight that improves the performance of light updates in Minecraft.
-This is done by taking advantage of multiple CPU cores in parallel.
 
 ## Why does this fork exist?
 - Starlight is no longer maintained as a mod [since Mar 8, 2024](https://github.com/PaperMC/Starlight/commit/cca03d62da48e876ac79196bad16864e8a96bbeb).
 - The performance of vanilla lighting engine is still a bottleneck for high-performance chunk generation.
 - Starlight's "stateless" design allows for parallel light updates.
   This is critical for allowing the chunk system to scale beyond 25 worker threads.
 
+## What does this fork do?
+- Contains all the performance improvements from Starlight with additional bug fixes.
+- Optionally allows for parallel light updates, bringing significant performance improvement in high-speed
+  world generation and heavy light updates scenarios.
+
 ## Building and setting up
 
 #### Initial setup