Fix documentation of Properties.hasProperty()
Fix documentation of Properties.hasProperty()

[#391]

wyrover/titanium_desktop,jvkops/titanium_desktop,wyrover/titanium_desktop,wyrover/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop,jvkops/titanium_desktop,wyrover/titanium_desktop,appcelerator/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop,appcelerator/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop,wyrover/titanium_desktop,wyrover/titanium_desktop,jvkops/titanium_desktop