Correct spelling of 'a project avatar'

app/views/projects/edit.html.haml

@@ -86,7 +86,7 @@
                   - if @project.avatar?
                     You can change your project avatar here
                   - else
-                    You can upload an project avatar here
+                    You can upload a project avatar here
                 %a.choose-btn.btn.btn-small.js-choose-project-avatar-button
                   %i.icon-paper-clip
                   %span Choose File ...