Remove grid1 shortcode (#552)

Author: jarrodmillman

doc/content/about/_index.md

@@ -7,4 +7,4 @@ 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.
 
-{{< grid1 file="theme-team.toml" columns="2 3 4 5" />}}
+{{< grid file="theme-team.toml" columns="2 3 4 5" />}}

layouts/shortcodes/grid.html

@@ -2,7 +2,7 @@
 
 doc: Grids.
 
-{{< grid1 columns="1 2 3 4" outline="true" >}}
+{{< grid columns="1 2 3 4" outline="true" >}}
 
 [[item]]
 type = ''
@@ -20,9 +20,9 @@
 type = ''
 body = 'D'
 
-{{< /grid1 >}}
+{{< /grid >}}
 
-{{< grid1 columns="1 2 2 4" >}}
+{{< grid columns="1 2 2 4" >}}
 
 [[item]]
 type = 'card'
@@ -92,7 +92,7 @@
 {{< /image >}}'''
 footer = 'A clickable figure card'
 
-{{< /grid1 >}}
+{{< /grid >}}
 
 */}}