bootstrap.sh: improve the informational message about 'git core-diff'

diff --git a/libexec/bootstrap.sh b/libexec/bootstrap.sh
index f18d337..8b92f97 100755 (executable)
--- a/libexec/bootstrap.sh
+++ b/libexec/bootstrap.sh
@@ -199,7 +199,7 @@ chmod 555 sites/default
 if [ -d core/.git ];
 then
   git -C core/ config --local alias.core-diff "diff --src-prefix=a/core/ --dst-prefix=b/core/"
-  echo "Added a 'git core-diff' to the drupal/core repository clone."
+  echo "Added a 'git core-diff' command to the drupal/core repository clone."
   echo "This command helps creating core patches ready for upstream."
 fi