title: plot_summs() change size of plotted regression coefficients
body: <p>I'm using <code>plot_summs()</code> from the <code>jtools</code> package to plot regression coefficients. I'm trying to make the plot big enough to see for a presentation and I figured out how to change the size of everything except the actual plotted coefficients (see the example plot below). </p>
  
  <p>Anyone have any ideas how to make the plotted coefficients bigger?</p>
  
  <pre><code>#example data and models
  states &lt;- as.data.frame(state.x77)
  fit1 &lt;- lm(Income ~ Frost + Illiteracy + Murder +
           Population + Area + `Life Exp` + `HS Grad`,
         data = states, weights = runif(50, 0.1, 3))
  fit2 &lt;- lm(Income ~ Frost + Illiteracy + Murder +
           Population + Area + `Life Exp` + `HS Grad`,
         data = states, weights = runif(50, 0.1, 3))
  fit3 &lt;- lm(Income ~ Frost + Illiteracy + Murder +
           Population + Area + `Life Exp` + `HS Grad`,
         data = states, weights = runif(50, 0.1, 3))
  
  # Plot all 3 regressions with custom predictor labels,
  # standardized coefficients, and robust standard errors
  testplot &lt;- plot_summs(fit1, fit2, fit3, coefs = c("Frost Days" =
       "Frost", "% Illiterate" = "Illiteracy","Murder Rate" = "Murder"),
                     scale = TRUE, robust = TRUE)
  
  #custom theme to format 
  apatheme=theme_bw()+
  theme(panel.grid.major=element_blank(),
      panel.grid.minor=element_blank(),
      panel.border=element_blank(),
      axis.line=element_line(),
      text=element_text(family='Helvetica'),
      legend.title=element_blank(), 
      axis.text=element_text(size=25),
      axis.title=element_text(size=15),
      legend.text = element_text(size = 20))
  
  
  testplot  + apatheme + labs(x = "\n Beta Estimate \n ", y = NULL)  
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/rkVwF.png" alt="Example plot (I want to change the size of the plotted coefficients)"></p>