Remove empty lines

Author: krlmlr

vignettes/numbers.Rmd

@@ -30,10 +30,8 @@ See `?pillar::pillar_options` for a comprehensive overview.
 
 ```{r numbers-3}
 tibble(x = 123.4567)
-
 old <- options(pillar.sigfig = 7)
 tibble(x = 123.4567)
-
 # Restore old options, see also rlang::local_options() for a more elegant way
 options(old)
 ```
@@ -50,7 +48,6 @@ Similarly, `char()` allows customizing the display of character columns.
 
 ```{r numbers-5}
 num(-1:3, notation = "sci")
-
 tibble(
   x4 = num(8:12 * 100 + 0.5, digits = 4),
   x1 = num(8:12 * 100 + 0.5, digits = -1),