RFR: 8303405: fix @returnss typo in ReflectionFactory

Wed Mar 1 00:55:02 UTC 2023

On Wed, 1 Mar 2023 00:24:31 GMT, Justin Lu <jlu at openjdk.org> wrote:

> The following typo: `@returnss` was reported on line _482 of Reflection Factory.java_.
> 
> In addition to fixing that, I have replaced multiple instances of `@returns` with `@return` in the same file.

Marked as reviewed by jpai (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/12794