docs: update contributing guidelines

contributing.md

@@ -2,10 +2,14 @@
 
 Please note that this project is released with a [Contributor Code of Conduct](code-of-conduct.md). By participating in this project you agree to abide by its terms.
 
+- **To add to the list:** Submit a pull request
+- **To remove from the list:** Open an issue
+
 Please ensure your pull request adheres to the following guidelines:
 
 - Alphabetize your entry.
 - Search previous suggestions before making a new one, as yours may be a duplicate.
+- Use the following format: `[Tool name](link) - Description.`
 - Suggested README tools should be beautiful or stand out in some way.
 - Make an individual pull request for each suggestion.
 - New categories or improvements to the existing categorization are welcome.
@@ -13,6 +17,6 @@ Please ensure your pull request adheres to the following guidelines:
 - If you are the tool owner and want to update the description of your tool entry which I have added, then you are welcome ✌.
 - Start the description with a capital and end with a full stop/period.
 - Check your spelling and grammar.
-- Make sure to use `.editorconfig` for formating.
+- Make sure to use `.editorconfig` while formating.
 
 Thank you for your suggestions!