Refactor the docs (#9031)

.github/REVIEWERS.md

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+# Area Reviewer
+
+Here are some reviewers for common areas. You can ping them to review your code if you touch related parts.
+
+## Hardware platforms
+- general @Alcanderian
+- AMD GPU @HaiShaw
+- Blackwell GPU @kushanam @trevor-m @zhyncs
+- CPU @mingfeima
+
+## Kernel
+- general @zhyncs @ispobock @HandH1998 @BBuf @yizhang2077 @HaiShaw
+- triton attention backend @ispobock
+- flash attention @hebiao064
+
+## Scheduler and memory pool
+- general @merrymercy @Ying1123 @hnyls2002 @xiezhq-hermann
+- constrained decoding @hnyls2002
+- hierarhical cache @xiezhq-hermann @DarkSharpness
+- lora @Fridge003 @Ying1123 @lifuhuang
+- speculative decoding @merrymercy @Ying1123  @kssteven418
+- sliding window attention @hanming-lu
+
+## Parallelism
+- expert parallelism @fzyzcjy @ch-wan
+- data parallelism attention @ch-wan
+- pipeline parallelism @Ying1123
+- tensor parallelism @merrymercy
+
+## PD disaggregation
+- general @ByronHsu @ShangmingCai @@ShangmingCai @hnyls2002
+- Mooncake backend @ShangmingCai
+
+## Build and release
+- general @zhyncs @merrymercy
+
+## API Server
+- general @CatherineSue @slin1237 @ispobock
+- function calling and reasoning parsing @CatherineSue
+- OpenAI API @CatherineSue @slin1237
+
+## SGL-Router
+- general @slin1237 @ByronHsu
+
+## Model
+- multimodal models @mickqian @JustinTong0323
+- other new models @zhaochenyang20
+
+## Reinforcment learning
+- general @zhaochenyang20 @hebiao064 @fzyzcjy @zhuzilin