docs: update contributing guidelines while adding subcategory (#1427)

CONTRIBUTING.md

@@ -57,12 +57,14 @@ Thank you for taking the time to contribute to our project. Please take a moment
 
       > For example, if you are adding a subcategory using the file `online-code-editors.json`, add `online-code-editors` to the `export type` statement in the appropriate style.
 
-  - If you are adding a subcategory, go to `components/TopBar/CategoryDescriptions.ts` and add the subcategory name used when exporting the name in `database/index.ts`, along with a proper description in the correct format.
+  - If you are adding a subcategory, go to `components/TopBar/CategoryDescriptions.ts` and add the subcategory name used when exporting the name in `database/index.ts`, along with a concise description in the correct format.
 
     > For example, if you export the subcategory name as `onlineCodeEditors` in `database/index.ts`, add the same name to `CategoryDescriptions.ts` using the following style:
 
     > subcategoryName: 'description of this subcategory'
 
+  - You can check out similar examples [here](components/TopBar/CategoryDescriptions.ts). It's essential to add a description when submitting a pull request to add a subcategory; to merge it in the codebase.
+
 ### Appending new Links 🔗
 
 > ✨ You can also create [issue(s)](https://github.com/rupali-codes/LinksHub/issues/new/choose) to suggest new links, and someone else will take care of them.
@@ -178,4 +180,4 @@ When adding _YouTube_ channel link, please specify _the language_ of the channel
 
 ## Remarks ✅
 
-- If something is missing here, or you feel something is not well described, either create a PR, [raise an issue](https://github.com/rupali-codes/LinksHub/issues), or [do a code review of the person’s PR](https://www.freecodecamp.org/news/code-review-tips/) (ensure that your review conforms to the [Code of Conduct](https://github.com/CBID2/LinksHub-my-version-/blob/main/CODE_OF_CONDUCT.md))
+- If something is missing here, or you feel something is not well described, either create a PR, [raise an issue](https://github.com/rupali-codes/LinksHub/issues), or [do a code review of the person’s PR](https://www.freecodecamp.org/news/code-review-tips/) (ensure that your review conforms to the [Code of Conduct](https://github.com/CBID2/LinksHub-my-version-/blob/main/CODE_OF_CONDUCT.md))