doc: Add quotes around PROJECT_NAME setting
doc: Add quotes around PROJECT_NAME setting

Otherwise spaces are stripped from the name, previously
rendered as "OOjsUI".

Change-Id: If413c81ec32097fa4483d8939875548263a68f99

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui