Update CONTRIBUTING.md

Fixed the broken link to "the provided template"

CONTRIBUTING.md

@@ -28,7 +28,7 @@ Whenever you are submitting any changes to the PnP repositories, please follow t
 
 When you are submitting a new sample, it has to follow up below guidelines
 
-* You will need to have a `README.md` file for your contribution, which is based on [the provided template](../samples/README-template.md) under the `samples` folder. Please copy this template to your project and update it accordingly. Your `README.md` must be named exactly `README.md` -- with capital letters -- as this is the information we use to make your sample public.
+* You will need to have a `README.md` file for your contribution, which is based on [the provided template](../main/samples/README-template.md) under the `samples` folder. Please copy this template to your project and update it accordingly. Your `README.md` must be named exactly `README.md` -- with capital letters -- as this is the information we use to make your sample public.
   * You will need to have a screenshot picture of your sample in action in the `README.md` file ("pics or it didn't happen"). The preview image must be located in the `/assets/` folder in the root of your solution.
 * The `README` template contains a specific tracking image at the bottom of the file with an `img` tag, where the `src` attribute points to `https://telemetry.sharepointpnp.com/powerautomate-samples/samples/readme-template`. This is a transparent image which is used to track viewership of individual samples in GitHub.
   * Update the image `src` attribute according with the repository name and folder information. For example, if your sample is named `mycoolflow` in the `samples` folder, you should update the `src` attribute to `https://telemetry.sharepointpnp.com/powerautomate-samples/samples/mycoolflow`
@@ -147,4 +147,4 @@ Thank you for your contribution.
 
 > Sharing is caring.
 
-<img src="https://telemetry.sharepointpnp.com/powerautomate-samples/CONTRIBUTING.md" />
+<img src="https://telemetry.sharepointpnp.com/powerautomate-samples/CONTRIBUTING.md" />