fix typo.

Author: csyonghe

index.md

@@ -28,7 +28,7 @@ The Slang system is designed to provide developers of real-time graphics applica
 
 * [Automatic differentiation](https://shader-slang.com/slang/user-guide/autodiff.html) as a first-class language feature. Slang can automatically generate both forward and backward derivative propagation code for complex functions that involve arbitrary control flow and dynamic dispatch. This allows users to easily make existing rendering codebases differentiable, or to use Slang as the kernel language in a PyTorch driven machine learning framework via [`slangtorch`](https://shader-slang.com/slang/user-guide/a1-02-slangpy.html).
 
-* Generics and interfaces allow shader specialization to be expressed cleanly without resort to preprocessor techniques or string-pasting. Unlike C++ templates, Slang's generics are checked ahead of time and don't produce cascading error messages that are difficult to diagnose. The same generic shader can be specialized for a variety of different types to produce specialized code ahead of time, or on the fly, completely under application control.
+* Generics and interfaces allow shader specialization to be expressed cleanly without resorting to preprocessor techniques or string-pasting. Unlike C++ templates, Slang's generics are checked ahead of time and don't produce cascading error messages that are difficult to diagnose. The same generic shader can be specialized for a variety of different types to produce specialized code ahead of time, or on the fly, completely under application control.
 
 * Slang provides a module system that can be used to logically organize code and benefit from separate compilation. Slang modules can be compiled offline to a custom IR (with optional obfuscation) and then linked at runtime to generate DXIL, SPIR-V etc.