Update numbers.qmd (#1761)

Minor typos have been fixed.

Author: gungorMetehan

numbers.qmd

@@ -741,7 +741,7 @@ flights |>
 ### With `mutate()`
 
 As the names suggest, the summary functions are typically paired with `summarize()`.
-However, because of the recycling rules we discussed in @sec-recycling they can also be usefully paired with `mutate()`, particularly when you want do some sort of group standardization.
+However, because of the recycling rules we discussed in @sec-recycling they can also be paired usefully with `mutate()`, particularly when you want to do some sort of group standardization.
 For example:
 
 -   `x / sum(x)` calculates the proportion of a total.