rebase -i: improve advice on bad instruction lines

If we found bad instruction lines in the instruction sheet
of interactive rebase, we give the user advice on how to
fix it.  However, we don't tell the user what to do afterwards.
Give the user advice to run 'git rebase --continue' after
the fix.

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-rebase--interactive.sh

@@ -1041,7 +1041,7 @@ The possible behaviours are: ignore, warn, error.")"
 		# placed before the commit of the next action
 		checkout_onto
 
-		warn "$(gettext "You can fix this with 'git rebase --edit-todo'.")"
+		warn "$(gettext "You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.")"
 		die "$(gettext "Or you can abort the rebase with 'git rebase --abort'.")"
 	fi
 }

t/t3404-rebase-interactive.sh

@@ -1195,7 +1195,7 @@ To avoid this message, use "drop" to explicitly remove a commit.
 Use 'git config rebase.missingCommitsCheck' to change the level of warnings.
 The possible behaviours are: ignore, warn, error.
 
-You can fix this with 'git rebase --edit-todo'.
+You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.
 Or you can abort the rebase with 'git rebase --abort'.
 EOF
 
@@ -1219,7 +1219,7 @@ cat >expect <<EOF
 Warning: the command isn't recognized in the following line:
  - badcmd $(git rev-list --oneline -1 master~1)
 
-You can fix this with 'git rebase --edit-todo'.
+You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.
 Or you can abort the rebase with 'git rebase --abort'.
 EOF
 
@@ -1254,7 +1254,7 @@ cat >expect <<EOF
 Warning: the SHA-1 is missing or isn't a commit in the following line:
  - edit XXXXXXX False commit
 
-You can fix this with 'git rebase --edit-todo'.
+You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.
 Or you can abort the rebase with 'git rebase --abort'.
 EOF