fixup: add ajhelsby to CODEOWNERS

Signed-off-by: Todd Baert <[email protected]>

Author: toddbaert

CODEOWNERS

@@ -3,4 +3,7 @@
 *                               @toddbaert @kavindu-dodan
 
 # Go Feature Flag
-/providers/go-feature-flag/     @thomaspoignant
+/providers/go-feature-flag/     @thomaspoignant
+
+# Flagsmith
+providers/flagsmith             @ajhelsby