Fix link to super-graph (now graphjin)

Signed-off-by: Brian Warner <[email protected]>

Author: brianwarner

src/content/code/language-support/go/tools/graphjin.md

@@ -0,0 +1,8 @@
+---
+name: graphjin
+description: An instant GraphQL to SQL compiler. Use as a standalone service or a Go library. Formerly super-graph.
+url: https://github.com/dosco/graphjin
+github: dosco/graphjin
+---
+
+