kevinms

Results 2 issues of kevinms

The first code example in the [_Shaping functions_](https://thebookofshaders.com/05/) chapter has the following plot function: ``` float plot(vec2 st) { return smoothstep(0.02, 0.0, abs(st.y - st.x)); } ``` Clicking on [smoothstep()](https://thebookofshaders.com/glossary/?search=smoothstep)...

Minor fix to comment.

cla: yes