Address header level problem from #169

Author: naupaka

episodes/04-bioconductor-vcfr.Rmd

@@ -74,7 +74,7 @@ You may need to also allow it to install some dependencies or update installed p
 {: .callout}
 
 
-# Search for Bioconductor packages based on your analysis needs
+## Search for Bioconductor packages based on your analysis needs
 
 While we are only focusing in this workshop on VCF analyses, there are hundreds or thousands of different types of data and analyses that bioinformaticians may want to work with. Sometimes you may get a new dataset and not know exactly where to start with analyzing or visualizing it. The Bioconductor package search view can be a great way to browse through the packages that are available.