[Ohrrpgce] wip r13929: Add docs for "string to lower" and "string to upper"

[cron at rpg.hamsterrepublic.com]

https://github.com/ohrrpgce/ohrrpgce/commit/8ac8434e05c120055f2b5f55f4711645f3263296
Author: james <james at 7d344553-34f0-0310-a9b1-970ce8f1c3a2>
Date:   Sun Jun 29 15:49:18 2025 +0000

    Add docs for "string to lower" and "string to upper"
    

 docs/plotdict.xml | 10 ++++++++++
 1 file changed, 10 insertions(+)