Fixed missing `.

Author: becarioprecario

vignettes/p7.Rmd

@@ -118,7 +118,7 @@ summary(m2)
 ```
 
 You can compare this Bayesian fit with a non-Bayesian analysis, this time making
-use of the `lmer()' function in the package `lme4`. (Here, `lme` means `linear
+use of the `lmer()` function in the package `lme4`. (Here, `lme` means `linear
 effects.) We present the code only for comparison, and we do not describe
 `lmer()` or `lme4` more fully.