Fix MMRMG01 layout (#286)

Closes #285

book/graphs/efficacy/mmrmg01.qmd

@@ -10,7 +10,7 @@ subtitle: Plots for Mixed-Effect Model Repeated Measures Analysis
 Given an MMRM fitted with `s_mmrm`, `g_mmrm_lsmeans` displays for each visit the adjusted means within group and/or difference in adjusted means between groups.
 `g_mmrm_diagnostic` displays marginal residual plots for evaluating model fit.
 
-:::: {.panel-tabset} and <br/> Model Fitting
+:::: {.panel-tabset}
 
 ```{r setup, echo = FALSE}
 library(dplyr)