Ruby: Add change note for new query

hmac · hmac · commit 3fba4a5fa758 · 2022-08-17T16:02:48.000+12:00
diff --git a/ruby/ql/src/change-notes/2022-07-21-incomplete-multi-character-sanitization.md b/ruby/ql/src/change-notes/2022-07-21-incomplete-multi-character-sanitization.md
@@ -0,0 +1,6 @@
+---
+category: newQuery
+---
+* Added a new query, `rb/incomplete-multi-character-sanitization`. The query
+  finds string transformations that do not replace all occurrences of a
+  multi-character substring.
