Some numbers are err in uni v2 document

[liushmh]

https://docs.uniswap.org/protocol/V2/concepts/protocol-overview/how-uniswap-works

Image 1, Fee in should be 0.3%

Image 2, Following numbers make more sense than original one

Image 3, Fee in third image should be 0.3%, total reserve of tokenA is 1203.009, so next price should be 3.01506015038