ArnoldOptionsUI : Fix typo and formatting
ArnoldOptionsUI : Fix typo and formatting

- Correct spelling of "runnig"
- Add a shorter label so it fits in the space available
- Remove trailing whitespace

GafferHQ/gaffer,johnhaddon/gaffer,boberfly/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,hradec/gaffer,johnhaddon/gaffer,boberfly/gaffer,lucienfostier/gaffer,hradec/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,hradec/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,boberfly/gaffer,ImageEngine/gaffer,boberfly/gaffer,lucienfostier/gaffer,hradec/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,hradec/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,johnhaddon/gaffer,johnhaddon/gaffer