Fix pre-commit issues

- Remove weight_dtype check (attribute doesn't exist in config)
- Fix markdown trailing space
- Error handling is done at kernel level instead

Signed-off-by: padg9912 <phone.and.desktop@gmail.com>

Author: certainly-param

docs/features/quantization/int8.md

@@ -9,7 +9,7 @@ Please visit the HF collection of [quantized INT8 checkpoints of popular LLMs re
     INT8 computation is supported on NVIDIA GPUs with compute capability > 7.5 (Turing, Ampere, Ada Lovelace, Hopper).
 
 !!! warning
-    **Blackwell GPU Limitation**: INT8 is not supported on compute capability >= 100 (e.g., RTX 6000 Blackwell). 
+    **Blackwell GPU Limitation**: INT8 is not supported on compute capability >= 100 (e.g., RTX 6000 Blackwell).
     Use [FP8 quantization](fp8.md) instead, or run on Hopper/Ada/Ampere architectures.
 
 ## Prerequisites