Fix warning message

Mismatch between title and index entry

Author: kevinrue

vignettes/HOWTO_BUILD_WORKSHOP.Rmd

@@ -4,7 +4,7 @@ subtitle: "In other words, how do I use what's here"
 author: Sean Davis^[[email protected]]
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{How to Use this Package to Build a Bioc Workshop}
+  %\VignetteIndexEntry{How To Build A Workshop Package}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---