patch 8.1.2409: creating the distribution doesn't work as documented

Problem:    Creating the distribution doesn't work as documented.
Solution:   Adjust name of uninstall binary. Create src/auto directory if
            needed.
diff --git a/tools/rename.bat b/tools/rename.bat
index d66b0d3..50b3f7b 100644
--- a/tools/rename.bat
+++ b/tools/rename.bat
@@ -3,4 +3,4 @@
 mv xxd/xxd.exe xxdw32.exe
 mv vim.pdb vimw32.pdb
 mv install.exe installw32.exe
-mv uninstal.exe uninstalw32.exe
+mv uninstall.exe uninstallw32.exe