feat(docs/home): Add Faucet Hub & gno.land/faucet mentions (gnolang…

…#2124)

<!-- please provide a detailed description of the changes made in this
pull request. -->

## Description

Closes [gnolang#2121](gnolang#2121)

<details><summary>Contributors' checklist...</summary>

- [x] Added new tests, or not needed, or not feasible
- [x] Provided an example (e.g. screenshot) to aid review or the PR is
self-explanatory
- [x] Updated the official documentation or not needed
- [x] No breaking changes were made, or a `BREAKING CHANGE: xxx` message
was included in the description
- [x] Added references to related issues and PRs
- [ ] Provided any useful hints for running manual tests
- [ ] Added new benchmarks to [generated
graphs](https://gnoland.github.io/benchmarks), if any. More info
[here](https://github.com/gnolang/gno/blob/master/.benchmarks/README.md).
</details>

docs/concepts/testnets.md

@@ -40,7 +40,8 @@ state - they are refreshed with every new commit to the `master` branch.
 monorepo
 
 For more information on the Portal Loop, and how it can be best utilized, 
-check out the [Portal Loop concept page](./portal-loop.md).
+check out the [Portal Loop concept page](./portal-loop.md). Also, you can find
+the Portal Loop faucet on [`gno.land/faucet`](https://gno.land/faucet).
 
 ## Staging
 Staging is a testnet that is reset once every 60 minutes.

examples/gno.land/r/gnoland/home/home.gno

@@ -245,6 +245,7 @@ func discoverLinks() ui.Element {
 - [Visit the official documentation](https://docs.gno.land)
 - [Gno by Example](https://gno-by-example.com/)
 - [Efficient local development for Gno](https://docs.gno.land/gno-tooling/cli/gno-tooling-gnodev)
+- [Get testnet GNOTs](https://faucet.gno.land)
 
 </div><!-- end column-->
 <div class="column">

examples/gno.land/r/gnoland/home/home_filetest.gno

@@ -43,6 +43,7 @@ func main() {
 //- [Visit the official documentation](https://docs.gno.land)
 //- [Gno by Example](https://gno-by-example.com/)
 //- [Efficient local development for Gno](https://docs.gno.land/gno-tooling/cli/gno-tooling-gnodev)
+//- [Get testnet GNOTs](https://faucet.gno.land)
 //
 //</div><!-- end column-->
 //<div class="column">