Update quicktour.mdx (#2637)

Fix typo

docs/source/en/quicktour.mdx

@@ -205,7 +205,7 @@ Schedulers manage going from a noisy sample to a less noisy sample given the mod
 
 <Tip>
 
-🧨 Diffusers is a toolbox for building diffusion systems. While the [`DiffusionPipeline`] is a convenient way to get started with a pre-built diffusion system, you can also choose your own the model and scheduler components separately to build a custom diffusion system.
+🧨 Diffusers is a toolbox for building diffusion systems. While the [`DiffusionPipeline`] is a convenient way to get started with a pre-built diffusion system, you can also choose your own model and scheduler components separately to build a custom diffusion system.
 
 </Tip>