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Update 3-getters-and-setters.md

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@ -80,7 +80,7 @@ obj2: Object
obj@data{"a"}[0] <- 42.0
```
Notice how `x@field` accesses a field, `x{key}` accesses a Map entry, and
`x@field` accesses a field, `x{key}` accesses a Map entry, and
`x[index]` accesses a List element. These accessors can be chained to access
deep fields:
@ -95,9 +95,9 @@ number: Maybe<F64>
obj@data{"a"}[0]
```
Notice a `Maybe` shows up only when needed (such as when getting an element from
a list or map). If you and the access with a `<-`, instead of getting the field,
you'll set it. You can also use `<=` to apply a function instead of setting:
As expected, a `Maybe` shows up only when needed (such as when getting an element from
a list or map). If you end the access with a `<-`, you'll overwrite the field, immutably
You can also use `<=` to apply a function instead:
```javascript
obj3: Object