Add links for sparse grant (#434)

Author: jarrodmillman

config.yaml

@@ -84,7 +84,8 @@ params:
       - title: Sparse Arrays
         text: |
           One of our current focuses is on improving and maintaining the
-          sparse array capabilities and inter-operability in the ecosystem.
+          [sparse array]({{< relref "/grants/sparse_arrays/" >}}) capabilities and
+          inter-operability in the ecosystem.
       - title: Community
         text: |
           Our [community efforts]({{< relref "/community" >}}) focus

content/grants/sparse_arrays/_index.md

@@ -21,4 +21,6 @@ provide array semantics to enable straightforward interaction with sparse data.
 This includes the design and implementation of 1D and 2D sparse array data
 structures, as well as expanding on the existing scipy.sparse package.
 
-Read the [full grant](../../doc/sparse-arrays-grant-2022.pdf).
+For more information, please see the
+[full grant](../../doc/sparse-arrays-grant-2022.pdf)
+and the [sparse data summits page]({{< relref "/summits/sparse" >}}).