RFR: 8268388: Update large pages information in Java manpage [v2]

[Stefan Johansson]

> Please review this update to the text for large pages in the Java man page. 
> 
> The text for `LargePageSizeInBytes` was reviewed in this [CSR](https://bugs.openjdk.java.net/browse/JDK-8265517), and this change will integrate them into the actual man page. The *Large Pages* section further down in the man page was also a bit out-dated and have been brushed up a bit.

Stefan Johansson has updated the pull request incrementally with one additional commit since the last revision:

  Stufe review.

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4425/files
  - new: https://git.openjdk.java.net/jdk/pull/4425/files/b9032051..0b9b079f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4425&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4425&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4425.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4425/head:pull/4425

PR: https://git.openjdk.java.net/jdk/pull/4425