Fixed typo in CONTRIBUTING.md file

CONTRIBUTING.md

@@ -8,23 +8,23 @@ Welcome to [TheAlgorithms/Javascript](https://github.com/TheAlgorithms/Javascrip
 
 ### Contributor
 
-We are very happy that you consider implementing algorithms and data structure for others! This repository is referenced and used by learners from around the globe. Being one of our contributors, you agree and confirm that:
+We are very happy that you consider implementing algorithms and data structures for others! This repository is referenced and used by learners from around the globe. Being one of our contributors, you agree and confirm that:
 
 - You did your work - plagiarism is not allowed.
   - Any plagiarized work will not be merged.
 - Your work will be distributed under [GNU License](LICENSE) once your pull request is merged
-- You submitted work fulfils or mostly fulfils our styles and standards
+- Your submitted work must fulfill our styles and standards
 
 **New implementation** is welcome! For example, new solutions to a problem, different representations of a graph data structure or algorithm designs with different complexity.
 
 **Improving comments** and **writing proper tests** are also highly welcome.
 
 ### Contribution
 
-We appreciate any contribution, from fixing grammar mistakes to implementing complex algorithms. Please read this section if you are contributing your work.
+We appreciate any contribution, from fixing grammar mistakes to implementing complex algorithms. Please read this section if you are contributing to your work.
 
 
-If you submit a pull request that resolves an open issue, please help us to keep our issue list small by adding `fixes: #{$ISSUE_NO}` to your commit message. GitHub will use this tag to auto close the issue if your PR is merged.
+If you submit a pull request that resolves an open issue, please help us to keep our issue list small by adding `fixes: #{$ISSUE_NO}` to your commit message. GitHub will use this tag to auto-close the issue if your PR is merged.
 
 #### What is an Algorithm?
 
@@ -61,17 +61,18 @@ To maximize the readability and correctness of our code, we require that new sub
 - follow code indentation
   - Always use 2 spaces for indentation of code blocks
     ```
-	function sumOfArray (arrayOfNumbers) {
-	    let sum = 0
-	    for (let i = 0; i < arrayOfNumbers.length; i++) {
-	      sum += arrayOfNumbers[i]
-	    }
-	    return (sum)
-	  }
-
-	```
+    function sumOfArray (arrayOfNumbers) {
+        let sum = 0
+        for (let i = 0; i < arrayOfNumbers.length; i++) {
+          sum += arrayOfNumbers[i]
+        }
+        return (sum)
+      }
+
+    ```
 - Avoid using global variables and avoid '=='
 - Please use 'let' over 'var'
+- Please use 'console.log()'  
 - We strongly recommend the use of ECMAScript 6
 - Avoid importing external libraries for basic algorithms. Only use those libraries for complicated algorithms.