add wording suggestion from donald

Author: sanghoonio

ui/src/components/bed-splash-components/refgenome-modal.tsx

@@ -30,7 +30,7 @@ export const RefGenomeModal = (props: Props) => {
         <ul className='text-sm'>
           <li><strong>XS</strong> (eXtra Sequences): the proportion of shared regions in both this BED file and reference genome over the total number of regions in this BED file [recall].</li>
           <li><strong>OOBR</strong> (Out Of Bounds Regions): The proportion of shared regions from this BED file that do not exceed the bounds of the corresponding shared region in the reference genome.</li>
-          <li><strong>Sequence Fit</strong>: the proportion of shared regions in both this BED file and reference genome over the total number of regions in the reference genome [precision].</li>
+          <li><strong>Sequence Fit</strong>: the proportion of shared region <span className='fst-italic'>lengths</span> in both this BED file and reference genome over the total number of region <span className='fst-italic'>lengths</span> in the reference genome [precision].</li>
         </ul>
 
         <div className='row mb-1'>