fix readme ref

BRONSOLO · BRONSOLO · commit 5c3716744a40 · 2024-06-10T10:31:50.000-04:00
diff --git a/.github/README.md b/.github/README.md
@@ -6,7 +6,7 @@
 
 # Paketo Buildpack for CPython Cloud Native
 
-A copy of the upstream README.md can be found here: [README-upstream.md](../README-upstream.md)
+A copy of the upstream README.md can be found here: [README.md](../README.md)
 
 # Plotly Branches
 
