title: corrplot margins in RStudio are too small
body: <p>When I produce a graphic in R-Studio, the margins are too small that it cuts off the graphic in the plot area. The output below follows <a href="http://www.sthda.com/english/wiki/chi-square-test-of-independence-in-r" rel="nofollow noreferrer">this tutorial</a>, which uses the <code>corrplot</code> library to run Pearson Chi-square residuals. No matter how I adjust my plot area or zoom or export, the bottom is still cut off. How do I adjust this?</p>
  
  <p><a href="https://i.stack.imgur.com/nV0QX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nV0QX.png" alt="plot area"></a></p>