missed formatting for subtraction

content/docs/stacks/clarity/basic-arithmetic.mdx

@@ -45,9 +45,11 @@ Clarity's arithmetic functions are designed with blockchain-specific considerati
 ### 2. Subtraction (-)
 
 **What**: Subtracts integers from the first argument.
+
 **Why**: Crucial for calculations involving decreasing values or finding differences.
+
 **When**: Use when you need to decrease values, calculate differences, or perform any subtractive operation.
-**How**: Code example and explanation.
+
 **Best Practices**: 
 - Guard against underflow
 - Consider using uint for values that shouldn't go negative