more typos in chapter 10

[wildekat]

Page 308, last paragraph: round(x [, n]) Rounds the result of rounding... Should read: Returns the result

Table 10.9 String Operators and Methods s.format_map(m) Formats s with substitutions taking from the mapping m Should read: taken from

Table 10.10 Tuple Operators and Methods s + t Concatenation if t is a list. Should read: if t is a tuple