Fixed broken table in docs

Author: Dervisevic

docs/index.md

@@ -1040,7 +1040,7 @@ Events are emitted or broadcast at various points in the process of rendering or
 form. Below is a list of these events and how they are propagated.
 
 | Event                | When                   | type  | arguments                          |
-| ---------------------|:----------------------:|:-----:| ------------------------------  --:|
+|:--------------------:|:----------------------:|:-----:|:----------------------------------:|
 | `sf-render-finished` | After form is rendered | emit  | The sf-schema directives's element |
 
 ### Manual field insertion