docs: add doc for substr
authorbep <bjorn.erik.pedersen@gmail.com>
Fri, 22 May 2015 20:36:17 +0000 (22:36 +0200)
committerbep <bjorn.erik.pedersen@gmail.com>
Fri, 22 May 2015 20:36:25 +0000 (22:36 +0200)
commitbe1366074c13a29b5c493cf5641c917f0a00a291
tree3c6819121e24bf9e484598154d23d94ce7984140
parentbe4376a022abb4a0370a8a34847835839b3aa82e
docs: add doc for substr

Fixes #1156
docs/content/templates/functions.md