Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

```
git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash
```

Closes #11925

docs/content/en/functions/fmt/Errorf.md

@@ -0,0 +1,26 @@
+---
+title: fmt.Errorf
+description: Log an ERROR from a template.
+categories: []
+keywords: []
+action:
+  aliases: [errorf]
+  related:
+    - functions/fmt/Erroridf
+    - functions/fmt/Warnf
+  returnType: string
+  signatures: ['fmt.Errorf FORMAT [INPUT]']
+aliases: [/functions/errorf]
+---
+
+{{% include "functions/fmt/_common/fmt-layout.md" %}}
+
+The `errorf` function evaluates the format string, then prints the result to the ERROR log and fails the build.
+
+```go-html-template
+{{ errorf "The %q shortcode requires a src parameter. See %s" .Name .Position }}
+```
+
+Use the [`erroridf`] function to allow optional suppression of specific errors.
+
+[`erroridf`]: /functions/fmt/erroridf