Update readme.md

Author: Probot-github-test-workflow

readme.md

@@ -1,5 +1,5 @@
 [![Build](https://github.com/sumatrapdfreader/sumatrapdf/actions/workflows/build.yml/badge.svg?branch=master)](https://github.com/sumatrapdfreader/sumatrapdf/actions/workflows/build.yml)
-## SumatraPDF Reader
+## SumatraPDF Readerd
 
 SumatraPDF is a multi-format (PDF, EPUB, MOBI, CBZ, CBR, FB2, CHM, XPS, DjVu) 
 for Windows under (A)GPLv3 license, with some code under BSD license (see
@@ -10,3 +10,4 @@ More information:
 * [manual](https://www.sumatrapdfreader.org/manual)
 * [developer information](https://www.sumatrapdfreader.org/docs/Contribute-to-SumatraPDF)
 
+