Add documentation what a valid tag is

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Matthias Beyer 2016-09-28 19:53:59 +02:00
parent d6f705dc90
commit da439e60e9

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@ -2,6 +2,8 @@
The Tagging module.
A valid tag matches the regex `[a-zA-Z][0-9a-zA-Z]*`.
### Description
<!-- Description of the module -->