Fixed a typo in a link to documentation on the README.md file

Author: pzaino

README.md

@@ -19,7 +19,7 @@ This repository is organised in multiple "levels":
 
 Everyone is welcome to help us to improve this repository and the resources list (as well as proposing more ideas for the meetings!). Also, we are always seeking for people willing to provide courses, presentations and/or sharing your experience coding on RISC OS.
 
-More info and details [here](docs/RISCOSCodingHowToMakeVideos.md) for who wish to help us with the videos.
+More info and details [here](doc/RISCOSCodingHowToMakeVideos.md) for who wish to help us with the videos.
 
 ### How to contribute