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Update data-transform.qmd (#1216) 

* Update data-transform.qmd

Fix wording

* Update data-transform.qmd

Co-authored-by: Mine Cetinkaya-Rundel <cetinkaya.mine@gmail.com>
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@ -335,7 +335,7 @@ There are a number of helper functions you can use within `select()`:
- `num_range("x", 1:3)`: matches `x1`, `x2` and `x3`.
See `?select` for more details.
Once you know regular expressions (the topic of @sec-regular-expressions) you'll also be use `matches()` to select variables that match a pattern.
Once you know regular expressions (the topic of @sec-regular-expressions) you'll also be able to use `matches()` to select variables that match a pattern.
You can rename variables as you `select()` them by using `=`.
The new name appears on the left hand side of the `=`, and the old variable appears on the right hand side: