Minor typos in documentation (#1500)

vignettes/rd-other.Rmd

@@ -42,6 +42,8 @@ This means you need to document them in a slightly different way: instead of doc
 #'   \item{depth}{total depth percentage = z / mean(x, y) = 2 * z / (x + y) (43--79)}
 #'   \item{table}{width of top of diamond relative to widest point (43--95)}
 #' }
+#' 
+#' @source {ggplot2} tidyverse R package.
 ```
 
 Note the use of two additional tags that are particularly useful for documenting data:

vignettes/rd.Rmd

@@ -80,7 +80,7 @@ This is unnecessary unless you want to have a multi-paragraph description, bulle
 
 ## Functions
 
-Functions are the mostly commonly documented objects.
+Functions are the most commonly documented objects.
 Functions require three tags: `@param`, `@returns`, and `@examples`.
 
 ### Inputs
@@ -134,5 +134,5 @@ All functions must have a documented return value for initial CRAN submission.
 ### Usage
 
 In most case, the function usage (which appears beneath the description in the generates docs) will be automatically derived from the function specification.
-For the cases where it is not, please [file an issue](https://github.com/r-lib/roxygen2/issues) and use `@usage` to override the default with you want.
+For the cases where it is not, please [file an issue](https://github.com/r-lib/roxygen2/issues) and use `@usage` to override the default with what you want.
 If you want to suppress the usage altogether (which is sometimes useful for internal or deprecated functions), you can use `@usage NULL`.