Update README.md

Author: ViralBShah

README.md

@@ -10,11 +10,11 @@ which provide a vectorised form of many common mathematical functions, however t
 general, the performance is significantly better than using standard libm
 functions, though there does appear to be some reduced accuracy.
 
-# OS Requirements
+## OS Requirements
 
 MacOS 12 is required in order to run AppleAccelerate.jl. On older MacOS versions, your mileage may vary.
 
-# Supported Functions
+## Supported Functions
 
 The following functions are supported:
  * *Rounding*: `ceil`, `floor`, `trunc`, `round`