Update docs.md (#825)
Update docs.md (#825)

Several unnecessary blank lines, some are missing

This does not affect the result of the rendering - viewing the source file is slightly confusing, especially for beginners.

Co-authored-by: Dieter Ziller <c61095bbde621a4e7069004e62245eda696d33ef@users.noreply.github.com>
getgrav/grav-learn,getgrav/grav-learn,getgrav/grav-learn,getgrav/grav-learn