Update quantization.md (#734)

try to format markup comments so they don't display

Author: mikekgfb

docs/quantization.md

@@ -2,6 +2,7 @@
 # Quantization
 
 [shell default]: HF_TOKEN="${SECRET_HF_TOKEN_PERIODIC}" huggingface-cli login
+
 [shell default]: TORCHCHAT_ROOT=${PWD} ./scripts/install_et.sh
 
 ## Introduction
@@ -154,4 +155,4 @@ We invite contributors to submit established quantization schemes, with accuracy
 - Show a table with performance/accuracy metrics
 - Quantization support matrix? torchchat Quantization Support Matrix
 
-[end default]: end
+[end default]: end