More {String} -> {string} conversions in documentation

Follow up for I6a7c9e8ee8f995731bc205d666167874eb2ebe23

The first pass that Timo took missed the following cases

* "{Array|String}": string is just one of the values
* "{String[]}": string is followed by [] to indicate an array of strings

Change-Id: I65e595e8d37fb624802d84af9536a2d3c5d73c7d
Merge "More {String} -> {string} conversions in documentation"