BUG fix the math issue in latex compilation
@@ -63,7 +63,7 @@ X.head()
##############################################################################
# Our target for prediction: the wage.
-# Wages are described as floating-point number in :math:`k$`
+# Wages are described as floating-point number in dollars per hour.
y = survey.target.values.ravel()
survey.target.head()
