Update readme (#665)

Author: jarrodmillman

README.md

@@ -1,9 +1,7 @@
 # The Scientific Python theme for Hugo
 
-The **Scientific Python Hugo Theme** is a theme for the
-[Hugo](https://gohugo.io) static site generator built on the
-[Fresh](https://github.com/StefMa/hugo-fresh) theme.
+The **Scientific Python Hugo Theme** is a theme for the [Hugo](https://gohugo.io) static site generator.
 
 Please see the [theme
 documentation](https://theme.scientific-python.org), especially the
-[get started](https://theme.scientific-python.org/getstarted/) page.
+[get started](https://theme.scientific-python.org/user_guide/getstarted/) page.