Update Anagrams.java (#7409)

fix: remove invalid reference [1] in Anagrams.java

Co-authored-by: Deniz Altunkapan <deniz.altunkapan@outlook.com>

Author: Abdul-Rehman-svg

src/main/java/com/thealgorithms/strings/Anagrams.java

@@ -5,7 +5,7 @@
 
 /**
  * An anagram is a word or phrase formed by rearranging the letters of a different word or phrase,
- * typically using all the original letters exactly once.[1]
+ * typically using all the original letters exactly once.
  * For example, the word anagram itself can be rearranged into nag a ram,
  * also the word binary into brainy and the word adobe into abode.
  * Reference from https://en.wikipedia.org/wiki/Anagram