chore: fix typos in src/main/java/com/thealgorithms/datastructures/trees/BSTRecursiveGeneric.java (#7030)

Fix typos in src/main/java/com/thealgorithms/datastructures/trees/BSTRecursiveGeneric.java

Author: khanhkhanhlele

src/main/java/com/thealgorithms/datastructures/trees/BSTRecursiveGeneric.java

@@ -30,7 +30,7 @@ public BSTRecursiveGeneric() {
     }
 
     /**
-     * Displays the tree is a structed format
+     * Displays the tree is a structured format
      */
     public void prettyDisplay() {
         prettyDisplay(root, 0);