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.

tools/rename.bat

@@ -3,4 +3,4 @@ mv tee/tee.exe teew32.exe
 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