[site/tools] Use 3.1-RC1 tag for changelog
diff --git a/src/content/tools/3.1/changes.mdtext b/src/content/tools/3.1/changes.mdtext
index d85827d..b711e22 100644
--- a/src/content/tools/3.1/changes.mdtext
+++ b/src/content/tools/3.1/changes.mdtext
@@ -4,5 +4,5 @@
 
 ### Release History
 
-{{changes_report(tools/HEAD)}}
+{{changes_report(tools/3.1-RC1)}}