While opening a case, there is a spelling mistake in the text "Open"

Environment:
Operating System: Windows 7
Browser: Chrome (Version 53.0.2785.143)

Steps:
1) Login to the civicrm
2) Do the configuration for cases
3) Click on the "Cases" link from the menu bar.
4) Click on the option "New Case".

Expected Output: A page with subheader "Case with status as open" should be displayed.
Actual Output: A page with subheader "Case with status as opem" is displayed.