docs: improve LinearSearch JavaDocs and complexity analysis

Author: yawarali1

src/main/java/com/thealgorithms/searches/LinearSearch.java

@@ -1,47 +1,37 @@
-/**
- * Performs Linear Search on an array.
- *
- * Linear search checks each element one by one until the target is found
- * or the array ends.
- *
- * Example:
- * Input: [2, 4, 6, 8], target = 6
- * Output: Index = 2
- *
- * Time Complexity: O(n)
- * Space Complexity: O(1)
- */
 package com.thealgorithms.searches;
 
 import com.thealgorithms.devutils.searches.SearchAlgorithm;
 
 /**
- * Linear Search is a simple searching algorithm that checks
- * each element of the array sequentially until the target
- * value is found or the array ends.
+ * Linear Search is a simple searching algorithm that checks each element 
+ * of the array sequentially until the target value is found or the array ends.
  *
- * It works for both sorted and unsorted arrays.
+ * <p>It works for both sorted and unsorted arrays.</p>
  *
- * Time Complexity:
- *  - Best case: O(1)
- *  - Average case: O(n)
- *  - Worst case: O(n)
+ * <p>Time Complexity:
+ * <ul>
+ * <li>Best case: O(1) - Target is at the first index.</li>
+ * <li>Average case: O(n) - Target is in the middle.</li>
+ * <li>Worst case: O(n) - Target is at the end or missing.</li>
+ * </ul>
+ * </p>
  *
- * Space Complexity: O(1)
+ * <p>Space Complexity: O(1)</p>
  *
  * @author Varun Upadhyay
  * @author Podshivalov Nikita
+ * @author yawarali1
  * @see BinarySearch
  * @see SearchAlgorithm
  */
 public class LinearSearch implements SearchAlgorithm {
 
     /**
-     * Generic Linear search method
+     * Generic Linear search method.
      *
-     * @param array List to be searched
-     * @param value Key being searched for
-     * @return Location of the key, -1 if array is null or empty, or key not found
+     * @param array List to be searched.
+     * @param value Key being searched for.
+     * @return Location of the key, -1 if array is null or empty, or key not found.
      */
     @Override
     public <T extends Comparable<T>> int find(T[] array, T value) {
@@ -59,4 +49,4 @@ public <T extends Comparable<T>> int find(T[] array, T value) {
 
         return -1;
     }
-}
+}