Add units (seconds) to Max Execution Time value for PHP

[p-bo]

Steps to reproduce

1. Go to Settings -> Administration -> System
2. Look at PHP section
3. Observe time value without units

Expected behaviour

Displayed: Max Execution Time: xxxx sec (or another string according locale settings) OR Max Execution Time (seconds): xxxx (add units directly to value name string and let translators to deal with correct string for time units)

Actual behaviour

Displayed: Max Execution Time: xxxx

Server configuration

Nextcloud version: 22.2.3

Where did you install. Nextcloud from: Nextcloud VM

[joshtrichards]

I had the same idea when I did #452 the other day (and nearly left it in).

It might be okay to just use s since it's an SI base value: https://en.m.wikipedia.org/wiki/International_System_of_Units

Feel free to send in a PR. :-)