[404] Page not found: https://nf-co.re/docs/developing/tutorials/writing-nf-core-modules/2-getting-started

Hi folks,

I found a broken link on [this page](https://nf-co.re/docs/developing/tutorials/writing-nf-core-modules/2-getting-started#required-software-and-accounts):

```
- [nf-core tools](https://nf-co.re/docs/nf-core-tools/installation).
``` 