`open/doc/building.md` uses the incorrect `OEL6` keyword to denote the Oracle Enterprise Linux base OS distribution for Devkit – replaced it with the correct one instead, i.e., `OL`.
------------- Commit messages: - Fix OL-related base OS keywords in Devkit docs Changes: https://git.openjdk.org/jdk/pull/26311/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26311&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8362244 Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/26311.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/26311/head:pull/26311 PR: https://git.openjdk.org/jdk/pull/26311
