Possible suppression bug

[jart]

A user reports:

     * @returns Returns the selected item(s). If the multi property is true,

Couldn't be suppressed by JSC_JSDOC_MISSING_TYPE_WARNING and had to be suppressed by jsdocMissingType.

This is worth investigating. However, it's worth noting, that the suppression warning message is probably going to stop mentioning the ALL_CAPS diagnostic codes, and instead restrict itself to recommending only the lowercase ones, since the prior are more likely to be renamed.