Fix: next page on the bottom toolbar

src/main/java/com/kdanmobile/reader/ReaderActivity.kt

@@ -773,7 +773,7 @@ abstract class ReaderActivity : AppCompatActivity() {
         ib_readerActivity_bottomToolbarNext.setOnClickListener {
             val handler = viewModel.pdfInfoHandler
             val pageIndex = handler.getCurrentPage()
-            val nextPageIndex = Math.min(pageIndex + 1, handler.getPdfPageCount())
+            val nextPageIndex = Math.min(pageIndex + 1, handler.getPdfPageCount() - 1)
             handler.setCurrentPage(nextPageIndex)
         }
         ib_readerActivity_bottomToolbarKdanCloud.visibility = if (isBottomBarKdanCloudBtnVisible()) {