update explanation for lastIndexOf()

The Array.prototype.lastIndexOf() return the last index of the matched element in the array.

Author: prajwalpoojary

06_Arrays/01_Array Methods/07_Methods for Searching/00_.md

@@ -5,7 +5,7 @@ There are many methods that can help you find specific elements in an array. The
   - returns `-1` is the element is not found
 
 `arrayname.lastIndexOf(element, [leftOf])`
-  - returns the index of the first match in the array
+  - returns the index of the last match in the array
   - returns `-1` is the element is not found
 
 `arrayname.find(function)`
@@ -14,4 +14,4 @@ There are many methods that can help you find specific elements in an array. The
 
 `arrayname.findIndex(function)`
   - returns the index of the leftmost element in the array, that meets the criteria in the function
-  - if no such element is found, returns `-1`
+  - if no such element is found, returns `-1`