Format all instructions.append.md to start with an H1 (required but ignored) and H2 (#355)

IsaacG · web-flow · commit 12c59ff07f1a · 2026-05-26T08:11:35.000+02:00
diff --git a/exercises/practice/anagram/.docs/instructions.append.md b/exercises/practice/anagram/.docs/instructions.append.md
@@ -1,3 +1,5 @@
 # Instructions Append
 
+## Implementation
+
 You must return the anagrams in the same order as they are listed in the candidate words.
