code: def hisat2_general_stats_table(self):
          
  
          headers = OrderedDict()
          headers['overall_alignment_rate'] = {
              'title': '% Aligned',
              'description': 'overall alignment rate',
              'max': 100,
              'min': 0,
              'suffix': '%',
              'scale': 'YlGn'
          }
          self.general_stats_addcols(self.hisat2_data, headers)
docs: Take the parsed stats from the HISAT2 report and add it to the
          basic stats table at the top of the report