Update issue_board.md

doc/user/project/issue_board.md

@@ -295,7 +295,7 @@ milestone with the due date that is next.
 
 > Introduced in [GitLab Enterprise Edition 10.0 Premium](https://about.gitlab.com/2017/09/22/gitlab-10-0-released/#group-issue-boards).
 
-Group issue boards are analogous to project-level issue boards ans they are accessible at the group
+Group issue boards are analogous to project-level issue boards and they are accessible at the group
 navigation level. A group-level issue board allows you to view all issues from all projects in that group
 (currently, it does not see issues from projects in subgroups). You can only associate group milestones
 and filter by group milestones for these boards. Similarly, you can only filter by group labels for these