fix: doc link (#2850)

Author: cptbtptpbcptdtptp

docs/en/graphics/material/builtinShaders/pbr.mdx

@@ -1,7 +1,7 @@
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 title: PBR
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-PBR stands for **Physically Based Rendering**. It was first introduced by Disney in 2012 and later widely adopted by the gaming industry. Compared to traditional rendering methods like **Blinn-Phong**, PBR adheres to the principle of energy conservation and follows physical rules. Artists only need to adjust a few simple parameters to ensure correct rendering effects even in complex scenes. PBR is a physically-based rendering method that follows energy conservation and introduces [IBL](/docs/graphics-light-ambient) to simulate global illumination. It uses parameters like metallic, roughness, etc., to make adjusting rendering effects more convenient.
+PBR stands for **Physically Based Rendering**. It was first introduced by Disney in 2012 and later widely adopted by the gaming industry. Compared to traditional rendering methods like **Blinn-Phong**, PBR adheres to the principle of energy conservation and follows physical rules. Artists only need to adjust a few simple parameters to ensure correct rendering effects even in complex scenes. PBR is a physically-based rendering method that follows energy conservation and introduces [IBL](/en/docs/graphics-light-ambient) to simulate global illumination. It uses parameters like metallic, roughness, etc., to make adjusting rendering effects more convenient.
 
 ## Base
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