FYI: typo in bootstrap's --help

[Jim Meyering]

        * bootstrap: Fix typo s/dowloading/downloading/ in --help output.

diff --git a/bootstrap b/bootstrap
index 215d3e8..f8f8de3 100755
--- a/bootstrap
+++ b/bootstrap
@@ -38,7 +38,7 @@ Options:
  --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
                           sources reside.  Use this if you already
                           have gnulib sources on your machine, and
-                          do not want to waste your bandwidth dowloading
+                          do not want to waste your bandwidth downloading
                           them again.
  --copy                   Copy files instead of creating symbolic links.
  --force                  Attempt to bootstrap even if the sources seem