Fix and add missing web schema indexes

Author: gnidan

packages/web/src/schemas.ts

@@ -174,7 +174,7 @@ export const schemaIndex: SchemaIndex = {
   },
 
   "schema:ethdebug/format/materials/reference": {
-    title: "Identifier schema",
+    title: "Reference schema",
     href: "/spec/materials/id#reference-schema"
   },
 
@@ -187,4 +187,9 @@ export const schemaIndex: SchemaIndex = {
     title: "Source schema",
     href: "/spec/materials/source"
   },
+
+  "schema:ethdebug/format/materials/source-range": {
+    title: "Source range schema",
+    href: "/spec/materials/source-range"
+  },
 };