add pagination doc

src/docs/pagination.md

@@ -0,0 +1,29 @@
+---
+title: Pagination
+---
+
+The blog posts use [Eleventy's pagination feature](https://www.11ty.dev/docs/pagination/). The logic for this can be found in the layout `src/_layouts/blog.njk`, how many entries should be on a page can be defined in `src/pages/blog.md`.
+
+If you do not want any pagination at all, it is easiest to specify a very high number for the pagination size, for example:
+
+```yaml
+pagination:
+data: collections.posts
+size: 10000
+```
+
+Now all entries are displayed under `/blog/` and there is no more pagination.
+
+In `src/_data_/meta.js` you can set some values for the visible content and the aria labels.
+
+You can also **hide the number fields** between the previous and next buttons by setting `paginationNumbers` to `false`.
+
+```js
+  blog: {
+    // other adjustments
+    pagination: 'Blog',
+    paginationPage: 'Page',
+    paginationPrevious: 'Previous',
+    paginationNext: 'Next',
+    paginationNumbers: true
+```