indent code block to keep the right HTML structure

Author: MichaelChirico

NEWS.md

@@ -7,15 +7,14 @@
 ### BREAKING CHANGE
 
 1. Rolling functions `frollmean` and `frollsum` used to treat `Inf` and `-Inf` as `NA` when using default `algo="fast"`. It has been changed now and infinite values are not treated as `NA` anymore. If your input into those functions has `Inf` or `-Inf` then you will be affected by this change. As a result, argument that controls behavior of `NA`s has been renamed from `hasNA` to `has.nf` (_has non-finite_), as of 1.18.0 both will work, former with a warning.
-```r
-## before
-frollsum(c(1,2,3,Inf,5,6), 2)
-#[1] NA  3  5 NA NA 11
+    ```r
+    ## before
+    frollsum(c(1,2,3,Inf,5,6), 2)
+    #[1] NA  3  5 NA NA 11
 
-## 1.18.0
-frollsum(c(1,2,3,Inf,5,6), 2)
-#[1]  NA   3   5 Inf Inf  11
-```
+    ## 1.18.0
+    frollsum(c(1,2,3,Inf,5,6), 2)
+    #[1]  NA   3   5 Inf Inf  11
 
 ### NOTICE OF INTENDED FUTURE POTENTIAL BREAKING CHANGES