Update action-layout.Rmd (#508)

action-layout.Rmd

@@ -515,7 +515,7 @@ ui <- fluidPage(
 If you're a HTML/CSS expert, you might be interested to know that can skip `fluidPage()` altogether and supply raw HTML.
 See "[Build your entire UI with HTML](https://shiny.rstudio.com/articles/html-ui.html)" for more details.
 
-Alternatively, you can use of the HTML helper that Shiny provides.
+Alternatively, you can make use of the HTML helper that Shiny provides.
 There are regular functions for the most important elements like `h1()` and `p()`, and all others can be accessed via the other tags helper.
 Named arguments become attributes and unnamed arguments become children, so we can recreate the above HTML as: