book1, typo page 5 - Inconsistent decision rule inequality in Iris decision tree example: `<= 2.45` vs `< 2.45`

[chenyangsu]

Hi ProbML team,

I noticed a small inconsistency in the Iris decision tree example in Section 1.2.1.3, Learning a classifier.

In Figure 1.4(a), the root node of the decision tree uses the rule:

petal length (cm) <= 2.45

However, in the text immediately below, the corresponding decision rule is written as:

Setosa if petal length < 2.45
Versicolor or Virginica otherwise

So the inequality differs between the figure and the text - the figure uses <= 2.45, while the text uses < 2.45.

Suggested correction: update the text to match the figure, e.g.

Setosa if petal length <= 2.45
Versicolor or Virginica otherwise

Thanks for maintaining this excellent resource!