Update links on frontend page (#2483)

Signed-off-by: Daniel Gray <[email protected]>

docs/frontends.md

@@ -122,10 +122,11 @@ By default, Yattee blocks all YouTube advertisements. In addition, Yattee option
 
 LibreTube allows you to store your subscription list and playlists locally on your Android device, or to an account on your Piped instance of choice, which allows you to access them seamlessly on other devices as well.
 
-[:octicons-home-16: Homepage](https://libre-tube.github.io){ .md-button .md-button--primary }
-[:octicons-eye-16:](https://github.com/libre-tube/LibreTube#privacy-policy-and-disclaimer){ .card-link title="Privacy Policy" }
+[:octicons-home-16: Homepage](https://libretube.dev){ .md-button .md-button--primary }
+[:octicons-eye-16:](https://github.com/libre-tube/LibreTube/blob/master/PRIVACY_POLICY.md){ .card-link title="Privacy Policy" }
 [:octicons-info-16:](https://github.com/libre-tube/LibreTube#readme){ .card-link title=Documentation}
 [:octicons-code-16:](https://github.com/libre-tube/LibreTube){ .card-link title="Source Code" }
+[:octicons-heart-16:](https://github.com/libre-tube/LibreTube#donate){ .card-link title=Contribute }
 
 <details class="downloads" markdown>
 <summary>Downloads</summary>
@@ -143,7 +144,7 @@ When using LibreTube, your IP address will be visible to the [Piped](https://git
 
 </div>
 
-By default, LibreTube blocks all YouTube advertisements. Additionally, Libretube uses [SponsorBlock](https://sponsor.ajay.app) to help you skip sponsored video segments. You are able to fully configure the types of segments that SponsorBlock will skip, or disable it completely. There is also a button on the video player itself to disable it for a specific video if desired.
+By default, LibreTube blocks all YouTube advertisements. Additionally, LibreTube uses [SponsorBlock](https://sponsor.ajay.app) to help you skip sponsored video segments. You are able to fully configure the types of segments that SponsorBlock will skip, or disable it completely. There is also a button on the video player itself to disable it for a specific video if desired.
 
 ### NewPipe (Android)
 
@@ -225,8 +226,8 @@ Invidious is useful if you want to disable JavaScript in your browser, such as [
 Piped requires JavaScript in order to function and there are a number of public instances.
 
 [:octicons-repo-16: Repository](https://github.com/TeamPiped/Piped){ .md-button .md-button--primary }
-[:octicons-server-16:](https://piped.kavin.rocks/preferences#ddlInstanceSelection){ .card-link title="Public Instances"}
-[:octicons-info-16:](https://piped-docs.kavin.rocks){ .card-link title=Documentation}
+[:octicons-server-16:](https://github.com/TeamPiped/Piped/wiki/Instances){ .card-link title="Public Instances"}
+[:octicons-info-16:](https://docs.piped.video/docs){ .card-link title=Documentation}
 [:octicons-code-16:](https://github.com/TeamPiped/Piped){ .card-link title="Source Code" }
 [:octicons-heart-16:](https://github.com/TeamPiped/Piped#donations){ .card-link title=Contribute }