Fix typo

Fixes #1120

base-R.qmd

@@ -485,7 +485,7 @@ Then instead of iterating over the elements of `paths`, we'll iterate over their
 seq_along(paths)
 ```
 
-Using the indices is important because it allows us to link to each each position in the input with the corresponding position in the output:
+Using the indices is important because it allows us to link to each position in the input with the corresponding position in the output:
 
 ```{r}
 for (i in seq_along(paths)) {