docs: Update showcase.md (#540)

freenandes

2023-10-18 54e722a55d58f4bab86184ffc970159628fa6967

 quartz/components/scripts/explorer.inline.ts

@@ -113,9 +113,11 @@
      ) as HTMLElement

      // Get corresponding content <ul> tag and set state
      const folderUL = folderLi.parentElement?.nextElementSibling
      if (folderUL) {
        setFolderState(folderUL as HTMLElement, folderUl.collapsed)
      if (folderLi) {
        const folderUL = folderLi.parentElement?.nextElementSibling
        if (folderUL) {
          setFolderState(folderUL as HTMLElement, folderUl.collapsed)
        }
      }
    })
  } else {