Added Contributing.md File

Contributing.md

@@ -0,0 +1,14 @@
+# How to Contribute
+
+## Issues
+- Browse the [issues](https://github.com/Pudi-Sravan/slack-clone/issues) currently raised and select one that you would like to work on.
+- Each issue is labeled according to its difficulty level.
+- If you encounter a new issue that isn't listed, feel free to raise a new issue on the [issues page](https://github.com/Pudi-Sravan/slack-clone/issues) of the repository.
+
+## Steps to Contribute
+1. Review the [README.md](./README.md) file to understand the setup process and project guidelines.
+2. Make the necessary changes to the codebase.
+3. Submit a pull request to the main branch.
+4. In your pull request description, include details about the issue you resolved and any other relevant information.
+
+Thank you for contributing to our project!

src/Front_end/homepage/ToDo_list/assigntask.jsx

@@ -265,6 +265,7 @@ const Assigntask = () => {
               setAssigntask(false);
             }}
             className={assigntaskCSS.closeIcon}
+            aria-label="Close"
           />
           <div className={assigntaskCSS.head}>
             <h1>Assign a Task</h1>