Add h2 and h3 tags for page structure. Closes #2623

web/components/common/ContentHeader/ContentHeader.tsx

@@ -29,10 +29,10 @@ export const ContentHeader: FC<ContentHeaderProps> = ({
         <Logo src={logo} />
       </div>
       <div className={styles.titleSection}>
-        <div className={cn(styles.title, styles.row, 'header-title')}>{name}</div>
-        <div className={cn(styles.subtitle, styles.row, 'header-subtitle')}>
+        <h2 className={cn(styles.title, styles.row, 'header-title')}>{name}</h2>
+        <h3 className={cn(styles.subtitle, styles.row, 'header-subtitle')}>
           <Linkify>{title || summary}</Linkify>
-        </div>
+        </h3>
         <div className={cn(styles.tagList, styles.row)}>
           {tags.length > 0 && tags.map(tag => <span key={tag}>#{tag}&nbsp;</span>)}
         </div>