Remove unnecessary explicit title anchors and use relative links instead (#20620)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

docs/features/quantization/bnb.md

@@ -1,7 +1,6 @@
 ---
 title: BitsAndBytes
 ---
-[](){ #bits-and-bytes }
 
 vLLM now supports [BitsAndBytes](https://github.com/TimDettmers/bitsandbytes) for more efficient model inference.
 BitsAndBytes quantizes models to reduce memory usage and enhance performance without significantly sacrificing accuracy.